1 . 如图1,在正方形
中,点E是
边上一点,F为
的中点,将线段
绕点F顺时针旋转
至线段
,连接
.某数学学习小组成员发现线段
与
之间存在一定的数量关系,并运用“特殊到一般”的思想开展了探究.
(1)①在上述两种思路中,选择其中一种完成其相应的第一步的证明:②写出线段
与
之间的数量关系式:______;
【深入探究】(2)如图1,当点E与点B不重合时,(1)中线段
与
之间的数量关系还成立吗?若成立,请加以证明:若不成立,请说明理由;
【拓展延伸】(3)连接
,记正方形
的面积为
,
的面积为
,当
是直角三角形时,请直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
思路一 | 思路二 | |
第一步 | 如图2,连接![]() ![]() ![]() | 如图3,将线段![]() ![]() ![]() ![]() ![]() |
第二步 | 利用相似三角形的性质及线段![]() ![]() ![]() ![]() | 利用全等三角形的性质及线段![]() ![]() ![]() ![]() |
图形表达 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
【深入探究】(2)如图1,当点E与点B不重合时,(1)中线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
【拓展延伸】(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7572ecc467c061ef71cf4486ec63ec3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8305e23d5378f1cbf5518256a37c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
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2 . 综合探究
【初步探究】如图1,在正方形
中,点E是
边上一点(不与B,C重合),
于点G,交对角线
于点H,交
于点F.为了探究
与
之间的数量关系,在如图2中,作
,
交
的延长线于点M.
(1)如图2,①求证:
;②当
,
时,求证:
;
【类比迁移】(2)如图3,在矩形
中,
,
,
,
于点G,交
于点H,交
于点F.求
的值;
【拓展应用】(3)如图4,在等边三角形
中,
,E是
的中点,
,交
于点G,交
于点F.请直接写出
的值.
【初步探究】如图1,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0ae50d5993a332b5cddb022eaa6f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93223650777bfa71643b387ea7217e54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)如图2,①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80015669b216142fd64c9bde5747d4f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cedd51383f8f047f565191b128cec637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783a833992e0862211a15fec2d3e3dda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/119b7f937fd3d31d3c7a3ef6cfc933e1.png)
【类比迁移】(2)如图3,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d768ffd5bf75080e8ff5ce6b472c0cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41744ec71119e7264ef9673a35805a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5a63c090c5041f4b78200915a9109e3.png)
【拓展应用】(3)如图4,在等边三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8689d619c2508c9000531fc1b8f1f21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaddfff30536c12b30caf9974feb59f.png)
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3 . 阅读材料:小百合特别喜欢探究数学问题,一天万老师给她这样一个几何问题:
如图1,
和
都是等边三角形,将
绕着点
旋转
,求证:
.
【探究发现】(1)小百合很快就通过
,论证了
,于是她想,把等边
和等边
都换成等腰直角三角形,如图2,将
绕着点
旋转
,其中
那么
和
有什么数量关系呢?请写出你的结论,并给出证明.
【拓展迁移】(2)如果把等腰直角三角形换成正方形,如图3,将正方形
绕点
旋转
,若
,
,在旋转过程中,当
,
,
三点共线时,请直接写出
的长度.
【拓展延伸】(3)小百合继续探究,做了如下变式:如图4,矩形
矩形
,且具有公共顶点
,将矩形
固定,另一个矩形
绕着点
顺时针旋转
,连接
、
,直线
交
于点
,在旋转的过程中,试证明
为
的中点.
如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efc7b22d85ff04a0ac89743f0bea1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6574405000dab3fec93b438aa2de0.png)
【探究发现】(1)小百合很快就通过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074887bdd8da63f19f3e488ae2275d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6574405000dab3fec93b438aa2de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efc7b22d85ff04a0ac89743f0bea1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0dd821851a38e5cbe13f63bee31fb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
【拓展迁移】(2)如果把等腰直角三角形换成正方形,如图3,将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f875de8bec0ffc84b8142f81080058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efc7b22d85ff04a0ac89743f0bea1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c406e7d1e7977dd5b30ef81cfdc8e8d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93401a1551b7e3c5bda0c9bb7220e01a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
【拓展延伸】(3)小百合继续探究,做了如下变式:如图4,矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef82ace37652c02cf6769a3c70e6890.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3190817cb33e1f1c63d5c71da6b1a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3190817cb33e1f1c63d5c71da6b1a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a746c4297a3a8b8062fd5127d03ecf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/79507e46-7648-475d-bc9c-23f3aed84b94.png?resizew=730)
您最近一年使用:0次
名校
4 . 综合与实践
【问题情境】
为了研究折纸过程中蕴涵的数学知识,老师发给每位同学完全相同的纸片,纸片形状如图1,在四边形
中(
),
,
.
老师引导同学们在边
上任取一点E,连接
,将
沿
翻折,点C的对应点为H,然后将纸片展平,连接
并延长,分别交
,
于点M,G.
老师让同学们探究:当点E在不同位置时,能有哪些发现?
经过思考和讨论,小莹、小明向同学们分享了自己的发现.
(1)如图2,小莹发现:“当折痕
与
夹角为
时,则四边形
是平行四边形.”
(2)如图3,小明发现:“当E是
的中点时,延长
交
于点N,连接
,则N是
的中点.
请你分别判断两人的结论是否正确,并说明理由.
(3)如图4,小慧在小明发现的基础上,经过进步思考发现:“延长
交
于点F.当给出
和
的长时,就可以求出
的长.”
老师肯定了小慧同学结论的正确性.若
,
,请你帮小慧求出
的长.
【问题情境】
为了研究折纸过程中蕴涵的数学知识,老师发给每位同学完全相同的纸片,纸片形状如图1,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f609cdfc6f3a96264bd9f43873b1869b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
图1
【探究实践】老师引导同学们在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
老师让同学们探究:当点E在不同位置时,能有哪些发现?
经过思考和讨论,小莹、小明向同学们分享了自己的发现.
(1)如图2,小莹发现:“当折痕
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb78bddee5406ae514db9a1d0a903f0a.png)
(2)如图3,小明发现:“当E是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
请你分别判断两人的结论是否正确,并说明理由.
(3)如图4,小慧在小明发现的基础上,经过进步思考发现:“延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
老师肯定了小慧同学结论的正确性.若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64e0206b1814c35cc96bd2b6b12239a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
图4
您最近一年使用:0次
2024-02-09更新
|
398次组卷
|
5卷引用:2024年广东省珠海市文园学校中考模拟数学试题
真题
名校
5 . 【问题背景】由光的反射定律知:反射角等于入射角(如图,即
).小军测量某建筑物高度的方法如下:在地面点E处平放一面镜子,经调整自己位置后,在点D处恰好通过镜子看到建筑物AB的顶端A.经测得,小军的眼睛离地面的距离
,
,
,求建筑物AB的高度.
观察小军的操作后,小明提出了一个测量广告牌高度的做法(如图):他让小军站在点D处不动,将镜子移动至
处,小军恰好通过镜子看到广告牌顶端G,测出
;再将镜子移动至
处,恰好通过镜子看到广告牌的底端A,测出
.经测得,小军的眼睛离地面距离
,
,求这个广告牌AG的高度.
小军和小明讨论后,发现用此方法也可测量出斜坡上信号塔AB的高度.他们给出了如下测量步骤(如图):①让小军站在斜坡的底端D处不动(小军眼睛离地面距离
),小明通过移动镜子(镜子平放在坡面上)位置至E处,让小军恰好能看到塔顶B;②测出
;③测出坡长
;④测出坡比为
(即
).通过他们给出的方案,请你算出信号塔AB的高度(结果保留整数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fed564d73f0171aa588049866d73e77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24e22be06430dd0d93e46350eafbc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5d842d352dc17888fa5b85aeaf0ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734ac463c26fa5caea9e4846bbe53d63.png)
观察小军的操作后,小明提出了一个测量广告牌高度的做法(如图):他让小军站在点D处不动,将镜子移动至
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522230546d4b802094e86ceb48c2ba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b7ae964b209f37c4dd3e014959eb78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4f150ab98bde511e0f65d9bafab031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/badd25c2bb2820f3d1e9714407a81b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24e22be06430dd0d93e46350eafbc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d8bbd60cb5f18cd78607f47b01d240.png)
小军和小明讨论后,发现用此方法也可测量出斜坡上信号塔AB的高度.他们给出了如下测量步骤(如图):①让小军站在斜坡的底端D处不动(小军眼睛离地面距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24e22be06430dd0d93e46350eafbc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/807138e61212b38867ecfcb5d8a024be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96b67ad2315feb9d8ae33b824c0b0c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f20b9c255e5830576860c40b06ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae96f50d8ad08fc3da12204541530ab.png)
您最近一年使用:0次
2023-08-01更新
|
1722次组卷
|
12卷引用:广东省深圳市部分学校2023-2024学年九年级上学期期中数学试题
广东省深圳市部分学校2023-2024学年九年级上学期期中数学试题广东省佛山市第六中学2023-2024学年九年级上学期期中数学试题2023年江苏省宿迁市中考数学真题(已下线)专题06锐角三角函数的应用大题专练(五大类型)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(苏科版)(已下线)九年级上学期期末模拟测试卷02-2023-2024学年九年级数学上学期期中期末考点归纳满分攻略讲练(浙教版)24-解直角三角形的实际应用(已下线)第2讲 锐角三角函数与解直角三角形(已下线)热点06++全等三角形与特殊三角形1(已下线)专题06 解直角三角形的应用(仰角俯角、坡度、方位角等问题)-2024年中考数学二轮热点题型归纳与变式演练(全国通用)山东省威海荣成市16校联盟(五四制)2023-2024学九年级下学期期中考试数学试题(已下线)查补重难点05 三角形与相似三角形-【查漏补缺】2024年中考数学复习冲刺过关(江苏专用)2024年山东省滨州市阳信县二模数学试题
6 . 在学习图形的旋转时,创新小组同学们借助三角形和菱形感受旋转带来图形变化规律和性质.
【操作探究】
(1)如图1,已知
,
,将
绕着直角边
中点G旋转,得到
,当
的顶点D恰好落在
的斜边
上时,斜边
与
交于点H.
_________
②证明:
.
【问题解决】
(2)在(1)的条件下,已知
,
,求
的长.
【拓展提升】
(3)如图2,在菱形
中,
,
, 将菱形
绕着
中点M顺时针旋转,得到菱形
,当菱形
的顶点E分别恰好落在菱形
的
边和对角线
上时,菱形
的边与
边相交于点 N, 请直接写出
的长.
【操作探究】
(1)如图1,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69550d878381f6e8fb436e88638f070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db90c0feb35aa54464f1303be9118f37.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b5a687a0635377e7e0e85d51c12f99.png)
【问题解决】
(2)在(1)的条件下,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
【拓展提升】
(3)如图2,在菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7cefa14a90337bbbb6e378d8a892d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454328a8e75953fdb0835ce80d9566e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7cefa14a90337bbbb6e378d8a892d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86b0118d4adeaf60493d13854fffc9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9c0f5b073a60ec35e05583faea4ed7.png)
您最近一年使用:0次
2024-04-22更新
|
462次组卷
|
4卷引用:2024年广东省深圳市(33校联考)中考二模数学试题
2024年广东省深圳市(33校联考)中考二模数学试题(已下线)重难点05 四边形压轴类型归纳(9大题型+满分技巧+限时分层检测)-2024年中考数学【热点·重点·难点】专练(广东专用)数学(盐城卷)-【试题猜想】2024年中考考前最后一卷2024年四川省成都市石室天府中学九年级下学期中考三模数学试题
名校
7 . 【模型发现】如图 1,
,求证:
.
【深入探究】如图2,等边
中,
,
是
上的动点,连接
,将
绕着点
逆时针旋转
得到
,连接
,当点
从
运动到
时,求点
的运动路径长.
【应用拓展】如图3,等腰
中,
,
于
,
是
上的一点,连接
,将
绕着点
逆时针旋转
得到
,
交
于点
,连接
,若
,则
的值为_______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67061e6fa526d1e082bed7b01c819982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aa98026a648010decfaf672dc9141c9.png)
【深入探究】如图2,等边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
【应用拓展】如图3,等腰
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b0f3bd57ace37f9bdc7b00c815e2326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c0ee7ae8a603a349ab1eac6ba48869.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/17/a1d3a6b3-439b-40f4-aecd-1829f5d0d9c5.png?resizew=427)
您最近一年使用:0次
2023-10-05更新
|
319次组卷
|
3卷引用:广东省深圳市红岭中学初中部2022-2023学年九年级上学期数学期末卷
广东省深圳市红岭中学初中部2022-2023学年九年级上学期数学期末卷广东省深圳市宝安区新安中学(集团)初中部2022-2023学年九年级上学期期中数学试题(已下线)专题12 相似三角形模型(旋转型)专项训练-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(广东专用)
8 . 综合与实践课上,老师让同学们以“矩形的折叠”为主题开展数学活动.
(1)操作判断
操作一:对折矩形纸片
,使
与
重合,把纸片展平,得到折痕
;
操作二:在
上选一点P,沿
折叠,使点A落在矩形内部点Q处,把纸片展平,连接
,
.根据以上操作,当点Q在
上(如图1)时,
__________°.
(2)迁移探究
小华将矩形纸片换成正方形纸片,继续探究,过程如下:
将正方形纸片
按照(1)中的方式操作,并延长
交
于点G,连接
.对角线
与
、
分别交于点M、N,连接
.当点Q在
上(如图2)时,判断线段
与
的位置关系,并说明理由;
(3)拓展应用
在(2)的探究中,改变点P在
上的位置,当点G在线段
上时(如图3),若正方形的边长为6,
,求
的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/5a95ff31-6c0d-47c2-9b26-6acc5c0ce0ca.png?resizew=460)
图1 图2 图3
(1)操作判断
操作一:对折矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
操作二:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca80a65f476341efad28539ad6877e9.png)
(2)迁移探究
小华将矩形纸片换成正方形纸片,继续探究,过程如下:
将正方形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
(3)拓展应用
在(2)的探究中,改变点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a917db13b0c7bb4a4f81c81a970454c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/5a95ff31-6c0d-47c2-9b26-6acc5c0ce0ca.png?resizew=460)
图1 图2 图3
您最近一年使用:0次
名校
9 . (1)【探究发现】如图①,已知四边形
是正方形,点
为
边上一点(不与端点重合),连接
,作点
关于
的对称点
,
的延长线与
的延长线交于点
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/5921e97a-71f3-466f-bd3b-5035a0a71ca6.png?resizew=134)
①小明探究发现:当点
在
上移动时,
.并给出如下不完整的证明过程,请帮他补充完整.
证明:延长
交
于点
.
②进一步探究发现,当点
与点
重合时,
______°.
(2)【类比迁移】如图②,四边形
为矩形,点
为
边上一点,连接
,作点
关于
的对称点
,
的延长线与
的延长线交于点
,连接
,
,
.当
,
,
时,求
的长;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/20efe1cb-7fb3-4d57-8834-93c3c6d31926.png?resizew=153)
(3)【拓展应用】如图③,已知四边形
为菱形,
,
,点
为线段
上一动点,将线段
绕点
按顺时针方向旋转,当点
旋转后的对应点
落在菱形的边上(顶点除外)时,如果
,请直接写出此时
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b435d7fc33860ae191f9111d880b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f611f5bb08a66cae8fe411e59a1c08e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/5921e97a-71f3-466f-bd3b-5035a0a71ca6.png?resizew=134)
①小明探究发现:当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32577dda778c0bd267c4ece7bfcacf76.png)
证明:延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
②进一步探究发现,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b6d0cf1c51302804d95d715178a7dc.png)
(2)【类比迁移】如图②,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b435d7fc33860ae191f9111d880b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ba89e83329983cfadbfcdda151aaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f611f5bb08a66cae8fe411e59a1c08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46562e866eb760487b101c250328335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ba89e83329983cfadbfcdda151aaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/20efe1cb-7fb3-4d57-8834-93c3c6d31926.png?resizew=153)
(3)【拓展应用】如图③,已知四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ce838f38419e8781d63b3417cac5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/28/206d977b-6aa5-4360-b79e-f1c80ed68ee0.png?resizew=227)
您最近一年使用:0次
名校
10 . 在四边形
中,
(E、F分别为边
、
上的动点),
的延长线交
延长线于点M,
的延长线交
延长线于点N.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/30/b985896d-efa1-4af8-8dd3-bf0f8bf1ebe0.png?resizew=660)
(1)问题证明:如图①,若四边形
是正方形,求证:
.
(2)拓展应用:如图②所示平面直角坐标系,在
中
,点A坐标为
,B,C分别在x轴和y轴上,且反比例函数
图像经过
上的点D,且
,求k的值.
(3)深入探究:如图③,若四边形
是菱形,连接
,当
时,且
,试用关于
的式子来表示
的值,则
__________.(直接写出结果)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a6aef04eceb608a7a2cfc3e566f9e8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/30/b985896d-efa1-4af8-8dd3-bf0f8bf1ebe0.png?resizew=660)
(1)问题证明:如图①,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0e54b2520f4d2bf433496da6fb701d.png)
(2)拓展应用:如图②所示平面直角坐标系,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf57804a00d72521b08f36a3034f83d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9212e728b36c078188606c9d429389d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d38cce21b48df42041e4b8b2a7db7.png)
(3)深入探究:如图③,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9204f2f7621cf1a937e6f4b8c0d583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ab3d50ac6ff2adff11559375f419f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5378a3867bf1a7386b1330aa8b36f0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7370954e60fd8b4921c57871d6494fa0.png)
您最近一年使用:0次
2023-04-21更新
|
550次组卷
|
3卷引用:2023年广东省深圳市南山区部分学校中考二模数学试卷