1 . 如图所示,在矩形
中,
,垂足为E,
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0430a637a3e40ef4fb3ea9fbb02c4471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f91da544e21dc901342ff11450b14fbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
2024-04-13更新
|
82次组卷
|
3卷引用:贵州省黔东南苗族侗族自治州从江县停洞中学2023-2024学年九年级下学期2月月考数学试题
2019·贵州遵义·一模
名校
解题方法
2 . 如图,在
中,
,点D是
边上一点,以
为直径的
与边
相切于点E,与边
交于点F,过点E作
于点H,连接
.
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b4c9fab3f6dc6f613f1d4d8a1bfc9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1feaee4052c156009f668cbad7cd8434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d50c276171238ad0facb218cc7ee8a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36a1938df65db2b68bf7595b97bafa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98f0db1041fa3f958e44c09a5483f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
您最近一年使用:0次
2024-04-12更新
|
459次组卷
|
22卷引用:【万唯】贵州省遵义市2018-2019学年中考数学模拟试题(黑卷)
(已下线)【万唯】贵州省遵义市2018-2019学年中考数学模拟试题(黑卷)2020年河南省九年级一摸数学试题(黑卷)2020年山东省济南市章丘区九年级学业水平模拟考试(一模)数学试题(已下线)【万唯原创】河南省中考数学黑白卷之黑卷(已下线)【万唯原创】2020年河南省中考数学试题-河南试题正文-第二部分题型3+4上山西省太原市第五中学2019-2020学年九年级7月阶段性练习(中考押题)数学试题2020年山西省太原五中中考押题考试卷(一)数学试题(已下线)【万唯原创】与切线判定有关的证明与计算·满分专练(一)河南省南阳市淅川县2020-2021学年九年级上学期期末数学试题(已下线)【万唯原创】2021年河南专项集训-16-21题题组集训3(已下线)【万唯原创】2021年河南专项集训-第一部分 题型三2(已下线)【万唯原创】2021年陕西省面对面-讲册-专题十一河南省新乡市辉县市市文昌中学2022-2023学年九年级上学期期末数学试题河南省漯河市临颍县2023-2024学年九年级上学期期末数学试题河南省驻马店市确山县2023-2024学年九年级上学期期末数学试题河南省驻马店市2023-2024学年九年级上学期期末数学试题河南省驻马店市学校2023-2024学年九年级上学期期末数学试题山东省德州市齐河县表白寺镇中学2023-2024学年九年级下学期第一次月考数学试题2024年安徽省包河区中考一模数学试题(已下线)热点07圆(3大考向13种题型+重难通关练+培优争分练)-2024年中考数学【热点·重点·难点】专练(安徽专用)2024年安徽省芜湖市第二十九中学中考三模数学试题2024年山东省济南市商河县中考二模数学试题
3 . 如图,在等腰三角形
中,
,点P在
平分线
上,过点P作线段
分别交
,
于点E,F,已知
.
;
(2)若
是
的中点,求
的长.
![](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/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.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/5789dad89570f81af126abb5d2dfd241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3925bb5dec03b3f37043e5d953d6a245.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987a8708be1633a7c048a1067fcbc2bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
4 . 如图,在
中,
,
,D、E在斜边
边上,
,若
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1af32e267e35ef79bcb8df5d169283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ee17bdc2c5af468bc1cb0f857a4ec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.6 | B.4![]() | C.4 | D.3![]() |
您最近一年使用:0次
2024-04-10更新
|
124次组卷
|
6卷引用:2024年贵州省黔西南州部分学校中考数学一模模拟试题
5 . 如图,在
中,
,以
为直径作
交
于点D,过点O作
的平行线
,交
于点E,作射线
交
的延长线于点F,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/9aded174-b880-4a03-8380-04f4a8e642d5.png?resizew=231)
(1)求证:
是
的切线;
(2)若
,
,求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/9aded174-b880-4a03-8380-04f4a8e642d5.png?resizew=231)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78220bdc4f0d3b1b0919f6a147d85a09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
您最近一年使用:0次
6 . 【特例感知】
(1)如图①,
和
是等腰直角三角形,
,点
在
上,点
在
的延长线上,连接
,
,写出图中一对你认为全等的三角形_________;
【类比迁移】
(2)如图②,将图1中的
绕着点
顺时针旋转
,那么第(1)问的结论是否仍然成立?如果成立,证明你的结论;如果不成立,说明理由.
【方法运用】
(3)如图③,若
,点
是线段
外一动点,
,连接
.若将
绕点
顺时针旋转
得到
,连接
,
是否有最小值,若有请求出最小值;若没有,请说明理由.
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9a6eeeebf3cff569578d7366b755aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3d3c378b1118d331d30b63fc587b270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
【类比迁移】
(2)如图②,将图1中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9a6eeeebf3cff569578d7366b755aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b57925b2b7df250255e3ab571580468.png)
【方法运用】
(3)如图③,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.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/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.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/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/d2f17458-7be9-4324-a8c8-d6bb515abc52.png?resizew=493)
您最近一年使用:0次
7 . 如图,边长为
的正方形
的对角线
与
交于点
,将正方形
沿
直线折叠,点
的对应点恰好落在对角线
上,折痕
与
交于点
,则
的长是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/1e1ae8ca-590e-4db1-bb41-2f4fa4cd52de.png?resizew=128)
您最近一年使用:0次
8 . 如图,一次函数
的图象与
轴交于点
,与反比例函数
的图象交于
两点,且
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c682405d9bcca65e257ac37ba07d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3c227315c127f132f9c805b7b45926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/5b28ba59-d2ee-496e-a7ea-6fa83267eeb0.png?resizew=200)
您最近一年使用:0次
9 . 如图,在
中有一个内接四边形
,延长
与
的延长线相交于点
,求证:
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcfbe4dd81a9cd85b2c5e6e10176306.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d831c9ba6d18774540e2aaa29132fec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a467d2cad75d39b67c8204df70239147.png)
您最近一年使用:0次
10 . 若一直线与圆相交,过交点作圆的切线,则此切线与直线的夹角称为直线和圆的交角,其中所夹弧为劣弧的角为劣交角,所夹弧为优弧的角为优交角.直线和圆的交角有以下性质:直线和圆的交角等于所夹弧所对的圆周角.
已知:如图1,直线
与
相交于点
,过点
作
的切线
,点
为
上任一点,连接
.求证:
______.
(2)如图2,直线
与
相交于
,
为
的直径,
切
于点
,交
的延长线于点
,若
,
,求
的半径.
已知:如图1,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6d50515fc65885d44cd6a3c41e6a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d715af2d0f55f1f8855361afee3fd0f.png)
(2)如图2,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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