已知
是
的直径,弦
,垂足为点
,点
在直径
上
与
、
不重合
,
,连接
并延长与
交于点
.
与点
重合时,求
的度数;
(2)连接
交弦
于点
,如果
,求
的值;
(3)当四边形
是梯形时,且
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad63ab71efa010821650ffe08bd907f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38af3632959a6b90efa8cf9f2589b1f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38d86a4c0dcb4ec85db47c65b9e7a4d.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83345242b9633bff4cf38af949f0f685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2919b74c41cb735f76de05ad705c6466.png)
(3)当四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa6d3b749c941fc5a348c8eed858881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377f5c10cf527c87ab06bff61384f7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
2023·上海杨浦·二模 查看更多[11]
2023年上海市杨浦区中考二模数学试卷(已下线)黄金卷07-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(上海专用)2023年北京市石景山区京源学校中考数学练兵试卷(4月份) (已下线)专题19 圆的有关计算与证明(共57题)-学易金卷:5年(2019-2023)中考1年模拟数学真题分项汇编(北京专用)上海市杨浦区2022-2023学年九年级下学期月考数学试题(已下线)2023年上海市二模(几何综合)(已下线)专题01梯形(2大易错点+3大提分策略+强化训练)-备战2024年中考数学考试易错题(上海专用)(已下线)专题11与圆有关的分类讨论(含2024年上海最新模拟)(4大易错点+强化训练)-备战2024年中考数学考试易错题(上海专用)(已下线)重难点05 几何压轴综合(8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(上海专用)(已下线)专题05 圆(5大热点题型)(含24年上海最新模拟题)-2024年中考数学毕业班二轮热点题型归纳与变式演练(上海专用)(已下线)专题14 压轴25题几何综合题60题专练(含上海24年最新模拟题)-2024年中考数学毕业班二轮热点题型归纳与变式演练(上海专用)
更新时间:2023-04-24 11:23:52
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】已知,如图,AB是⊙O的直径,弦CD⊥AB于点E,CD=10,BE=2,求⊙O的半径长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/76989eb3-56de-42ab-820c-814ab215af7d.png?resizew=206)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,
内接于半圆,
是直径,过A作直线
,使
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/ab3dffb6-cc7e-49ce-b6fe-ed3a1924e432.png?resizew=195)
(1)求证:
是半圆的切线:
(2)作弧
的中点D.连结
交
于G,过D作
于E,交
于F(尺规作图,并保留作图痕迹).并求证:
.
(3)若
,
,求
.
![](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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4536721335272e9790104bf7cc7e92c6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/ab3dffb6-cc7e-49ce-b6fe-ed3a1924e432.png?resizew=195)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)作弧
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ca3dd37272f50d52d8deb2a62dd820.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,已知
中,
,以
为直径的
交
于
,过点
作
于
,交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/2021/5/21/2725895869186048/2755708532850688/STEM/2cbef3cf-bb58-43fc-81b7-9e5a38290fa7.png)
(1)求证:
是
的切线;
(2)若
,求证:
;
(3)当
,
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827beb23a9fe02a8b588645bcb82ce67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2021/5/21/2725895869186048/2755708532850688/STEM/2cbef3cf-bb58-43fc-81b7-9e5a38290fa7.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99256fcfc0f71e0e8992c2cf40b93cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b9c72e7718ea6979dbf53b6bcfaeca.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613dedf2d90e58591b7ac4a250ac7b5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,正方形ABCD中,点E,F分别为AB,AD的中点,以AE,AF为边作正方形AEGF.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/26/a6fdee44-b841-43b2-b5a4-4295c5555a63.png?resizew=528)
(1)在图1中,线段DF与CG之间有怎样的数量关系?说明理由.
(2)在图2中,将正方形AEGF绕点A顺时针旋转一定角度(旋转角小于90°)后,得到正方形AE'G'F',连接DF',CG',则线段DF′与CG′之间的数量关系是否仍然成立,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/26/a6fdee44-b841-43b2-b5a4-4295c5555a63.png?resizew=528)
(1)在图1中,线段DF与CG之间有怎样的数量关系?说明理由.
(2)在图2中,将正方形AEGF绕点A顺时针旋转一定角度(旋转角小于90°)后,得到正方形AE'G'F',连接DF',CG',则线段DF′与CG′之间的数量关系是否仍然成立,请说明理由.
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解答题-应用题
|
适中
(0.65)
【推荐1】如图,边长为a的大正方形是由1个边长为b的小正方形和4个形状大小完全相同的梯形组成.
(2)请用两种不同的方法计算图中阴影部分的面积,由此,你能得到一个怎样的公式?
(2)请用两种不同的方法计算图中阴影部分的面积,由此,你能得到一个怎样的公式?
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,在直角梯形
中,
,
,
为
边上的点,将直角梯形
沿对角线
折叠,使
与
重合.若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dceb5cc71fc50f20649f6b9535fd914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51b89f545616ef48f3706850107ad95.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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您最近一年使用:0次