1 .
和
都是直角三角形,
,
,
,连接
, 探究
的位置关系.
(1)如图1,当
时,直接写出
的位置关系为_____ ;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/30/7efa9605-d927-4e60-bfa6-e80d22370498.png?resizew=153)
(2)如图2,当
时,(1)中的结论是否成立?若成立,给出证明;若不成立,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41663d9e5e18891475aeaa98794f33d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc75953bf5dcfa4af308c34bf9952d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99100a3ec33eecf804076f76c905359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4818e07559cd9ec3810dcb4d0cdb6a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0a3fa475b24f57ecd79c681259561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0a3fa475b24f57ecd79c681259561.png)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0a3fa475b24f57ecd79c681259561.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/30/7efa9605-d927-4e60-bfa6-e80d22370498.png?resizew=153)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e7930731eddbcfac592b808e9b698.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/30/bdf97d7a-e5f9-4e2a-982f-cf7ccae6fdd9.png?resizew=185)
您最近一年使用:0次
2024-04-08更新
|
61次组卷
|
2卷引用:2024年辽宁省抚顺市望花区九年级中考三模数学模拟试题
2 . 【方法探究】如图1,在
中,
平分
,
,探究
,
,
之间的数量关系;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/cdf21045-6284-46d8-bfc7-d16d602d46a1.png?resizew=335)
嘉铭同学通过思考发现,可以通过“截长、补短”两种方法解决问题:
方法1:如图2,在
上截取
,使得
,连接
,可以得到全等三角形,进而解决此问题.
方法2:如图3,延长
到点
,使得
,连接
,可以得到等腰三角形,进而解决此问题.
(1)根据探究,直接写出
,
,
之间的数量关系;
【迁移应用】
(2)如图4,在
中,D是
上一点,,
,
于
,探究
,
,
之间的数量关系,并证明.
【拓展延伸】
(3)如图5,
为等边三角形,点
为
延长线上一动点,连接
.以
为边在
上方作等边
,点
是
的中点,连接
并延长,交
的延长线于点
.若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d00f4651b343dd8f9060c6460f0c955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/cdf21045-6284-46d8-bfc7-d16d602d46a1.png?resizew=335)
嘉铭同学通过思考发现,可以通过“截长、补短”两种方法解决问题:
方法1:如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
方法2:如图3,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d122b68c9166884bdfbfaf77680187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(1)根据探究,直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
【迁移应用】
(2)如图4,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88dc4d22c2c289f6d4494b9c2be84407.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
【拓展延伸】
(3)如图5,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d76558c64a967b76de7d7796812e503d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/718ea4e105f8775adc877e515260abff.png)
您最近一年使用:0次
3 . 如图,边长为4的正方形
,点
是边
上的一点,连接
,将射线
绕点
逆时针旋转
交
的延长线于点
,连接
,取
中点
,连接
,若
,则
的长为______ .
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a52f2332ee4c30229b6cbb6bf223db36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/31/77b5c13d-31eb-47fc-ac3f-f20b568087b8.png?resizew=150)
您最近一年使用:0次
2024-04-07更新
|
200次组卷
|
3卷引用:2024年辽宁省辽阳市二中协作校中考数学第一次模拟试题
名校
4 . 如图,在正方形
中,点E是边
上的一点,点F在边
的延长线上,且
,连接
交边
于点G.过点A作
,垂足为点M,交边
于点N.若
,
,则线段
的长为 __ .
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ece62406732661b930e2c0adbc90ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d2231c7a2875ab6d423dff3ead4069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb8edfb89cceeff066215b2985828fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/e26d6790-686b-484c-9156-075e98bb12bc.png?resizew=104)
您最近一年使用:0次
2024-04-07更新
|
303次组卷
|
6卷引用:2023年辽宁省沈阳市皇姑区辽宁省实验学校中考一模数学试题
2023年辽宁省沈阳市皇姑区辽宁省实验学校中考一模数学试题湖南省长沙市长沙县某四校联考2023-2024学年九年级上学期第一次月考数学试题2024年黑龙江省哈尔滨市南岗区第四十九中学中考一模数学(五四制)试题湖南省长沙市浏阳市2022-2023学年八年级下学期期末数学试题(已下线)第06讲 正方形的性质和判定(知识解读+达标检测)-2023-2024学年八年级数学下册《知识解读·题型专练》(苏科版)(已下线)专题18.33 平行四边形(直通中考)(培优练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)
5 . (1)在数学教学活动公组讨论时,锦州组老师提出这样一个问题:
在几何题自中如果有
的条件,同学们通常如何做辅助线呢?根据日常的学习交流和老师的点拨,同学们会发现了这样几种方法:
①如图a,作
的角平分线,构造等腰三角形.②如图b,作
,构造等腰三角形.
③如图c,作
,构造等腰三角形.④如图d,作
,构造等腰三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/142243b9-6ff6-454b-b4b7-55004e024de6.png?resizew=613)
参考以上方法同学们就会解决下面问题:
如图1,在
中,
,
,求证
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/2439fe7d-a173-4dd1-aaaf-65489382d4ba.png?resizew=156)
【类比分析】
(2)如图2,在
中,点D、E两点分别在线段AB、BC上,
,
,过点E作
.如图2,求证
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/89c0c27a-7724-440d-880c-ee6f2aabbf50.png?resizew=441)
【学以致用】
(3)如图3,
为等边三角形,
,若
,
,求
的长.
在几何题自中如果有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d6077bea1bbc60b7edede6dcab490f.png)
①如图a,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
③如图c,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/054e578ae7f5ce35ef71f54257f7175f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38397641e807f6b2286ecf8e5bebc095.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/142243b9-6ff6-454b-b4b7-55004e024de6.png?resizew=613)
参考以上方法同学们就会解决下面问题:
如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03dec5f11c1dcf9747edcd27a798fa56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3976d08e5f9e24e76ce9579c06a8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/2439fe7d-a173-4dd1-aaaf-65489382d4ba.png?resizew=156)
【类比分析】
(2)如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af25c308a1d4982c130d0fa0dcb83d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6574405000dab3fec93b438aa2de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669588427e89b121321b8e68e16785c6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/89c0c27a-7724-440d-880c-ee6f2aabbf50.png?resizew=441)
【学以致用】
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f42a8026760145aa6d4bb76bcc0b52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb79c82e2ecee4cce178f5e9d79d39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8cc58ef27567f0ab06eb1012aec330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/d9add7bd-ff6a-4815-85b3-140cf428d85b.png?resizew=447)
您最近一年使用:0次
6 . 如图1,在等腰直角三角形
中,
,
.点
是
的中点,以
为边作正方形
,连接
,
.将正方形
绕点
顺时针旋转,旋转角为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/1ad1a8f7-ce69-4754-b4ab-bbb22525602d.png?resizew=454)
(1)如图2,在旋转过程中,
①判断判断
与
的数量关系和位置关系,并说明理由;
②当
时,
与
交于点
,求
的长.
(2)如图3,延长
交直线
于点
.在旋转过程中,线段
的长度是否存在最大值?若存在,求出最大值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d78fc7fcb2762de28dcef8aa3aa0e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b40aa8d2482d698ebef69cf225f99f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/1ad1a8f7-ce69-4754-b4ab-bbb22525602d.png?resizew=454)
(1)如图2,在旋转过程中,
①判断判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1d267eeb09c171c3e847f0597be31c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
(2)如图3,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
您最近一年使用:0次
7 . 如图,
直线
于点
,点
在直线
上(不与点
重合),连接
,将线段
绕点
顺时针旋转
,得到线段
,连接
,点
是
的中点,连接
,
,当
是等腰三角形时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/e6834ac70927ae08d7d36a1922403c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
您最近一年使用:0次
2024-04-01更新
|
458次组卷
|
4卷引用:辽宁省锦州市第八中学2023-2024学年九年级下学期101行动计划终极性评价(零模)数学模拟预测题
辽宁省锦州市第八中学2023-2024学年九年级下学期101行动计划终极性评价(零模)数学模拟预测题2024年辽宁省锦州市第八初级中学九年级中考一模数学模拟试题(已下线)考前特训02 图形变化类选题压轴(翻折、旋转、平移)--2024年中考数学二轮热点题型归纳与变式演练(全国通用)(已下线)抢分通关02 几何图形选填压轴题(含特殊三角形、特殊平行四边形、圆等综合问题,2易错+5题型)-备战2024年中考数学抢分秘籍(全国通用)
8 . 【方法归纳】
(1)在
中,点
在
边上,
交
于点
,将
绕点
逆时针旋转
,得到
,其中点
的对应点是点
,点
的对应点是点
,连接
,
.
①如图1,如果
,求
的值;
②如图2,如果
的延长线与线段
交于点
,求
的度数;
【方法应用】
(2)如图3,在四边形
中,
,连接
,且
,则四边形
的对角线
的长度最大值为______.
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d021981c03e75b1a246d899dcc64656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7199ded47c047792b3147c25467359c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7572ecc467c061ef71cf4486ec63ec3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
①如图1,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b277d2266f627e757bfca698e29bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3741e9dd176655f08c98778137302cc3.png)
②如图2,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c546219b1d505c3f275e9612955c2a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae55a0c2394db34861f116b0a6d3b0e.png)
【方法应用】
(2)如图3,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41cd7b4dd31fc8c85f9ffeb654c82b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e88cc50b0c639a1dd4a1d592c4f90dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357d9412cb6b277a3e317d99135ab64b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/29/388fd484-8b25-401a-aa6d-30520f3b84fb.png?resizew=410)
您最近一年使用:0次
9 . 如图,矩形
中,点
分别在
上,
,
.求证:
平分
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3956369191d0383bdb8786134da7dd9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71f60c4ea76c3328bfc64fec58a16d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3e6500dd5e8afa138fc72a8a8224e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3de20ba8bda63c650ef571be155702.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/9c277d91-603e-4f32-8d68-9627dec2596b.png?resizew=164)
您最近一年使用:0次
10 . 如图1,在中,
,点E在
边上,D为
边上一点,G在
的延长线上,连接
,
,
,若
,
,
.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f3be56ff71e09fb420437d7ee5cb94.png)
(2)请找出图中与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(3)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5927a828e8a652a0e6caaa8bbbb4ea0f.png)
您最近一年使用:0次