1 . 如图,
,
分别与
相切于
,
两点,点
在
上,
切
于
,分别交
,
于点
,
,已知
,
的半径为
,则
的周长是___________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/cfd882f87c55965db1241fd255b5e61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a9eed64d225267a58cd001db67e2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/17/f2abd84a-acb8-4be6-8dac-6f3b29de7829.png?resizew=183)
您最近一年使用:0次
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|
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|
2卷引用:京改版九年级数学上册 第22章 圆 单元测试
2 . 如图,
,
分别与
相切于
,
两点,
是优弧
上的一个动点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e570370ff2d9b2909c77ed575c28983e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/27/042659e8-8325-4719-b1a0-f04658de6b7d.png?resizew=214)
您最近一年使用:0次
3 . 如图,
切
于点A,
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/4/0a323536-65e8-462c-825a-649b25644b2b.png?resizew=193)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2b2c5ebfaa1c48d26e64562eb1ee87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e385b42f17d8d22605e6fb2b6c51895.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/4/0a323536-65e8-462c-825a-649b25644b2b.png?resizew=193)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-04-28更新
|
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|
3卷引用:第2章 圆 单元测试 2022-2023学年湘教版九年级数学下册
名校
4 . 如图,
为
的切线,A,B分别为切点,
,点P到圆心O的距离
,则
的半径为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/7c4864cc-03ed-4bb2-9348-d95715f44d65.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a1dd47d59b9755e1815f18f3e22ef81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15b82151bff7cc0238d2034a6129f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07445aa3909818a3ef93bb01182f545f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/7c4864cc-03ed-4bb2-9348-d95715f44d65.png?resizew=160)
A.![]() | B.1 | C.![]() | D.2 |
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2023-04-08更新
|
140次组卷
|
2卷引用:第31章 圆 单元测试卷 人教版(五四制)九年级数学上册
5 . 如图,
是
的直径,
为
的切线,切点为C,交
的延长线于点A,点F是
上的一点,且点C是弧
的中点,连接
并延长交
的延长线于点B.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/1e013337-a6e8-4f77-92a5-a6488561dd17.png?resizew=189)
(1)求证:
;
(2)若
,
,求⊙O的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/1e013337-a6e8-4f77-92a5-a6488561dd17.png?resizew=189)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b6d19fedaf8488f9637cd64efbca83.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549288857c93a36bfb1a280b61e3670c.png)
您最近一年使用:0次
2023-04-05更新
|
284次组卷
|
9卷引用:京改版九年级数学上册第22章 圆(下) 单元测试卷
名校
6 . 如图,
中,
,点
是
边上的一点,
与
、
分别相切于点
、
,点
为
上一点,连
,若四边形
是菱形,则图中阴影部分面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/724642b2-6e90-47ad-a17f-e1b92fbee474.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c013bbe1fb6e9acf461548b5cf6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/724642b2-6e90-47ad-a17f-e1b92fbee474.png?resizew=155)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-22更新
|
559次组卷
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11卷引用:第二十八章圆(A卷-中档卷)-【单元测试】2022-2023学年九年级数学分层训练AB卷【冀教版】
(已下线)第二十八章圆(A卷-中档卷)-【单元测试】2022-2023学年九年级数学分层训练AB卷【冀教版】2022年湖南省长沙市开福区长沙市北雅中学中考数学冲刺最后一卷湖北省武汉市六中位育中学2021-2022学年九年级下学期月考数学试题 湖北省武汉市一初慧泉中学2020—2021学年九年级下学期5月月考数学试卷2023年江西省抚州市中考一模数学试卷(已下线)2023年湖北省天门市仙北中学九年级数学中考复习第一次模拟测试题(已下线)专题31 与圆有关的计算-备战2023年中考数学一轮复习之必考点题型全归纳与分层精练(全国通用)2023年江苏省锡山高级中学实验学校九年级下学期第一次适应性练习数学试题(已下线)数学(山西卷)-学易金卷:2023年中考第一次模拟考试卷(已下线)2023年广东省深圳市南山区中考二模数学试卷变式题6-10题湖南省永州市冷水滩区李达中学2022-2023学年九年级下学期第二次月考数学试题
名校
7 . 如图,
是
的直径,弦
于点
,在
的切线
上取一点
,使得
.
是
的切线;
(2)若
,
,求
的长.
![](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/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5739567df03f8254035bb9927db01a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7bae5203f4b4acf23779114b3466e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
您最近一年使用:0次
2023-02-17更新
|
318次组卷
|
10卷引用:京改版九年级数学上册第22章 圆(下) 单元测试卷
京改版九年级数学上册第22章 圆(下) 单元测试卷北京市第一六一中学2021-2022学年九年级下学期数学第一次月考测试题【区级联考】北京市海淀区2019届九年级中考数学一模(已下线)专题14 图形的性质之解答题(3)《备战2020年中考真题分类汇编》(北京)(已下线)专题07 圆的综合-决胜2020年中考数学压轴题全揭秘精品(北京专用)2020年北京市三帆中学中考基础练习数学试题2020年山东省美加学校数学中考仿真模拟测试题(一)2021学年北京师范大学附属实验中学九年级下学期摸底数学试题(已下线)2023年广西中考数学真题变式题23-26题北京市理工大学附属中学分校2023-2024学年九年级下学期开学考试数学试题
名校
8 . 如图,在
中,
,以
为直径的
交
边于点D,过点C作
,与过点B的切线交于点F,连接
.
;
(2)若
,求
的长.
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9f641563e8533a5bb39188aa7cc182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a87efa1454c6082c9168c66b5a129f3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e11f7255b70ee069b754d2caf80301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
2023-02-06更新
|
191次组卷
|
5卷引用:鲁教版(五四制)七年级数学上册 第三章 勾股定理 单元测试
2018九年级·全国·专题练习
名校
9 . 如图,已知,
.
(1)在图中,用尺规作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f68e4414c9ab464bf433385c03705f.png)
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2023-01-14更新
|
83次组卷
|
12卷引用:沪教版九年级数学下学期 第二十七章 圆与正多边形单元测试
沪教版九年级数学下学期 第二十七章 圆与正多边形单元测试(已下线)第24章 圆【B卷】-2021-2022学年九年级数学上册同步必刷基础拓展单元卷(人教版)福建省福州三牧中学2021-2022学年九年级下学期期中考数学试题江苏省盐城市东台市五烈镇广山中学等3校2022-2023学年九年级上学期期中数学试题 (已下线)2年中考1年模拟 第四篇 图形的性质 专题25 尺规作图(已下线)中考考点总动员 考点29 尺规作图【全国校级联考】湖南省邵阳市北塔区2018届九年级中考数学考前押题卷(二)【全国区级联考】湖南省邵阳市北塔区2018届中考押题数学试卷【区级联考】江苏省南京市溧水区2019届九年级第一学期期末数学试题(已下线)【万唯原创】2018年山西-试题研究-第一部分第七章7.1+7.2(已下线)考点18 尺规作图与定义、命题、定理-备战2021年中考数学考点 核心考点清单2024年山西省晋中市昔阳县中考一模数学试题
10 . 如图,直线
,
,
分别与
相切于
,
,
,且
,若
,
,则
的长等于______ .
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
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