1 . 如图,为了测量山坡的护坡石坝高,把一根长为
的竹竿
斜靠在石坝旁,量出竿上
长为
时,它离地面的高度
为
,则坝高
为多少
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b3a8761dd1abc553e222ce5db621979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f328ba89c0a92a4447788b65571f7aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122fc10d49eacb9aa36bff6d7f0652f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/18/c8772ee9-0ef4-4804-a72c-1740b38fae54.png?resizew=208)
您最近一年使用:0次
2023-10-03更新
|
90次组卷
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3卷引用:贵州省安顺市平坝区2023-2024学年九年级上学期数学阶段质量检测(三) 试题
2 . 在边长为
的正方形
中,点
是边
上的动点(不与
重合),连接
,将
沿
向右翻折得
,连接
和
,若
为等腰三角形,则
的长为_____________________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](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/e0520e9675bc1b416e8b8f01eb69fd13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca2698f08d94afa1cd5b81444791f4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a37ba261860ddad9d11b2e8348a8f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/26/68e62c83-a635-4ad4-a1d2-03019974f07b.png?resizew=158)
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3 . 综合与实践:
(1)问题情景:如图1,已知等边
和它内部一点D,把线段
绕点B逆时针旋转
得到线段
,连接
,射线
交于点F,则
与
数量关系是___________,
__________°.
(2)类比探究:如图2,在等腰
中,
,点D是
边上一点,过点D作
交
于点E,将
绕点A旋转得到
,连接
,
,在旋转的过程中,设直线
交于点F,探索
和
的数量关系和
的度数;
(3)拓展应用:如图3,在
中,
,以
为斜边作等腰直角三角形
,若
求线段的
长(直接写出答案).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/fe893de1-3097-4723-93c9-91d9fe70d318.png?resizew=568)
(1)问题情景:如图1,已知等边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64145253f11cc50329bb9f08b4e97d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0da1f94cd38666cf340b690960b14193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720e7bbf162682a0b30ce82119cb9232.png)
(2)类比探究:如图2,在等腰
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f97bf47387beb9f9fd0253b8a21234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b750a0aeab4974c590b538e009fb3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a48a700725aa5032190e863c632d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ba89e83329983cfadbfcdda151aaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d2094777538ba6a70ea65d5061ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8e033b41edb22b0d8c14b2ba2bcbfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ba89e83329983cfadbfcdda151aaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d2094777538ba6a70ea65d5061ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77282d5b97a60264cf15fb74b48e4b59.png)
(3)拓展应用:如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e839dc2d2be15db18ee660ea5068d8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a047ae3e67c2e1f933ec4f1a92b98267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2023-09-24更新
|
180次组卷
|
2卷引用:贵州省毕节市金沙县第四中学2023-2024学年九年级上学期期中数学试题
4 . 在平行四边形
中,点
分别是边
的中点,
分别交
于点
,请判断下列结论,其中正确的结论有( )
①
;②
; ③
;④
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242b88a92c3f78aab24d2cc6944c53ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa16498b83d2df4608888d3f4466e2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaedb59b442983718f9c992ba94b8822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89928ff3371d3434ab53cd248a103c24.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/9/20b3e320-b318-47c4-86b7-d5de7fd88c5e.jpg?resizew=225)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550b15375a54ce849585b60bc42d2dd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e317c69d692137a4ccb626a9ba47718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c129397d481beba80d0251fa926fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db937afbab9e16fe9ed801ec16fbbb1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 如图所示,在等腰三角形
中,
,点
在线段
上,点
在线段
上,且
,
.求证:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a373959bb9026f8a09845c0b828bf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a893fc8b2e9d55c9cdf8aceb3827a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199cfd9fd800d6a9ed2758a847a5f08d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/20/4093be27-b7ec-418d-beff-4ca3012ad99c.jpg?resizew=190)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a23fa5b9f3edf840951a565ecb7420.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc036fe61db701ee6f0119a25b991f2f.png)
您最近一年使用:0次
2023-09-11更新
|
145次组卷
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4卷引用:贵州省铜仁市碧江区第五中学2023-2024学年九年级上学期期中数学试题
贵州省铜仁市碧江区第五中学2023-2024学年九年级上学期期中数学试题广东省深圳市深圳实验学校初中部2023-2024学年九年级上学期开学考试数学试题(已下线)第4章 图形的相似全章复习攻略与检测卷(3个概念2个性质1个判定1个作图1个应用2种思想)-【帮课堂】2023-2024学年九年级数学上册同步学与练(北师大版)(已下线)专题4.53 相似三角形的性质与判定综合专题(分层练习)(综合练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)
6 . 如图在直角坐标系中有两点
,
,点
为
的中点,点
在
轴上,若以点
,
,
组成的三角形与
相似,则点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109a293cef44f23e86e22c1a4cfcbbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f91d3dae606eb82b05160c222766ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/2/c09677ae-cbd8-4fca-b714-d2bff3bf5160.png?resizew=116)
A.![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2023-09-02更新
|
93次组卷
|
2卷引用:贵州省/铜仁市石阡县2023-2024学年九年级上学期12月数学质量检测题
7 . 如图,平行四边形
中,
分别是
的中点,
分别是
的中点,连接
,则
的长是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/382699f8497a0249dbf5f77dc0f0180c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3355e2fa0ac6c675f02ee36c3ced4f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de3ca9072a768b4741fa36d8fcdebd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/22/42604068-24b7-4c25-ae17-e7b99d42abcc.png?resizew=198)
您最近一年使用:0次
名校
8 . 如图,已知菱形
,点
是
上的点,连接
,将
沿
翻折,点
恰好落在
边上的
点上,连接
,延长
,交
延长线于点
.
(1)求证:
;
(2)若菱形
的边长为
,
,求
的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01f6f70b5cb3fd3b580e9f298588d6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a679040c4d556723e482bacbab41356d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b1e48b189ed48dc8cd4edc0ae7bc00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/23/bff61daf-5d02-4240-906f-aa03e5d61683.png?resizew=184)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3c66d9a0ce54808eb99100eb0a4ebd.png)
(2)若菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f0df3d5703b3c192d54956b1464fe13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
您最近一年使用:0次
2023-07-21更新
|
173次组卷
|
10卷引用:2023年贵州省铜仁市碧江区中考三模数学试题
2023年贵州省铜仁市碧江区中考三模数学试题2023年贵州省铜仁市碧江区中考数学模拟预测题(3月份)广东省深圳市部分学校2022-2023学年九年级下学期2月联考质量检测数学试题2023年山东省滕州市九年级初中学业水平考试模拟(一模)数学试题2023年广东省深圳市三十校联考中考质检数学试卷(2月份)(已下线)专题16 与特殊四边形有关的证明计算-学易金卷:2023年中考数学一模试题分项汇编(全国通用)(已下线)专题11 四边形-学易金卷:2023年中考数学一模试题分项汇编(山东专用)广东省深圳市龙岗区龙城初级中学2022-2023学年九年级下学期开学考试数学试卷广东省深圳市30校联考2022-2023学年九年级下学期开学数学试题(已下线)XDRzkgssxtzxl934
9 . 在
中,
,D、E分别时
、
边上的点,
.将
绕点A旋转.
(一)发现问题
(1)如图①,
、
、
满足的数量关系为________;
(二)探究问题
(2)如图②,
,
相交于点M,连接
,求证:
平分
;
(三)拓展应用
(3)如图③,在四边形
中,
,
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
(一)发现问题
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
(二)探究问题
(2)如图②,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1a67f1ffb62274c4faefc197a4cf82.png)
(三)拓展应用
(3)如图③,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ddd49625097d0a78df7170be4f882e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b648f6f2bcc33d4ab0d3925ffb9c5e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e47acfa0b0bde7dbb8d7f294f98185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/22/3ae937a4-a223-478a-af85-e9395bae7aa1.png?resizew=652)
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10 . 如图,直线
与x轴交于点
,与反比例函数
的图像交于点
,将直线
绕点A逆时针旋转
后与y轴交于点C,连接
.
(1)求k和m的值;
(2)求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1813f49beb455f89ec3308b027c8fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9212e728b36c078188606c9d429389d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a50694bcd0ffb2bd7e5ddc72d66f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/21/7319e2c8-cba1-466a-9ee2-53314a707182.png?resizew=174)
(1)求k和m的值;
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
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