1 . 如图所示,
与
轴相交于
,
,与
轴相切于点
,
是优弧
上的一点,则
等于
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bda45b7f565147f18a5c83bb8a23142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf468f5132e14ee1d8cc766808b11af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4460932196ad334decc9d264e790acc8.png)
![](https://img.xkw.com/dksih/QBM/2023/5/10/3234738757402624/3237493471600640/STEM/b686e37471324a55a1c4628d099d85e8.png?resizew=4)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/25/dd18fe3f-a926-48f0-9184-cac3f070da7e.png?resizew=159)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-25更新
|
48次组卷
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2卷引用:京改版九年级数学上册第22章 圆(下) 单元测试卷
2 . 如图,
、
是
的切线,切点分别为A、B,若
,则弦
所对的圆周角的度数为__________ 度.
![](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/4748019ffe61853bf5d1114af61c66ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/14/2f11cc76-1f0c-4058-8489-5b2c3f9801d8.png?resizew=171)
您最近一年使用:0次
2023-05-20更新
|
190次组卷
|
2卷引用:泸科版九年级下册第24章圆单元测试数学试题
3 . 如图,
与
相切于点C,
,
分别交
于点D,E,
.
;
(2)已知
,
,求阴影部分的面积.
![](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/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaffcd2070bfcb1955e2cab66c26c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fca3734de79f7f50b552ef62b29dc7c.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7bae5203f4b4acf23779114b3466e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3dfcd8aff269dd5aba398816490c6.png)
您最近一年使用:0次
2023-05-20更新
|
187次组卷
|
14卷引用:2018年春九年级数学下册湘教版:单元测试(二) 圆
2018年春九年级数学下册湘教版:单元测试(二) 圆2019届湘教版九年级数学下册单元测试(二) 圆(A卷)第31章 圆 单元测试卷 人教版(五四制)九年级数学上册第2章 圆 单元测试 2022-2023学年湘教版九年级数学下册【全国省级联考】河北省2018届九年级中考数学模拟试卷(三)【全国校级联考】山东省蒙阴2018届九年级二轮复习验收考试数学试题【校级联考】安徽省六安市霍邱县三校(霍邱二中、农机校和宋店中心校)2019届九年级下学期第二次模拟考试数学试题2019年安徽省六安市霍邱县三校联考中考数学二模试卷黑龙江省大庆市肇源县(五四学制)2020-2021学年九年级上学期期末数学试题2021年山东省济南市高新区中考一模数学试题2021年甘肃省酒泉市中考一模数学试题2021年浙江省丽水市中考数学教学质量检测(一)2023年湖北省黄冈市部分学校中考模拟数学试题湖南省岳阳市岳阳县九校联考2023-2024学年九年级下学期第一次月考数学试题
4 . 如图,⊙O的半径为1,OA=2,AB切⊙O于点B,弦BC∥OA,连接AC,则图中阴影部分的面积为________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/23/fff24c40-17e9-491f-844c-7b9b7319a12f.png?resizew=154)
您最近一年使用:0次
5 . 如图,
,
分别切
于点A,B,
切
于点E,交
,
于点C,D.若
的周长为
半径的3倍,则
的值为( )
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4460932196ad334decc9d264e790acc8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/23/fc90adfd-b844-4ebb-b39b-4307a61ee3f8.png?resizew=197)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 如图,
经过圆心
交
于点
,
与
相切于点
.若
,
,则
与
之间的函数关系图象是 ( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/17/1967aba0-c878-413c-b9cc-9d9143c7053f.png?resizew=140)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e403cf1cefa695e6ee0085d529d8b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4b76647dcfb6c6beaa81fb23fed576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/17/1967aba0-c878-413c-b9cc-9d9143c7053f.png?resizew=140)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
7 . 如图,
是
的内切圆,切点分别为点
、
、
,设
的面积、周长分别为
、
,
的半径为
,则下列等式:①
;②
;③
;④
,其中成立的是______ (填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](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/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2135e6fa98de0103511e73048f386e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78f309df5a80dda0ae53adc7c1f5000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ffcd7a8bd4527a00a4932f19bbdf12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfc33753b8373eec61434c96e7c1144.png)
![](https://img.xkw.com/dksih/QBM/2023/5/10/3234738757402624/3237493473067008/STEM/3bcc0037e7224202b8c94e5c1e0925e4.png?resizew=174)
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8 . 如图,在
中,
,D是
的中点,
经过A、B、D三点,
的延长线交
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/21/4e1972ff-528c-4da2-a97f-61d7b1964859.png?resizew=140)
(1)求证:
;
(2)
与
相切于点E,交
的延长线于点F,若
,求
的直径;
(3)在(2)的条件下,若
,求
.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/21/4e1972ff-528c-4da2-a97f-61d7b1964859.png?resizew=140)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553a93e0b6156befa00b50bdfaef95d9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.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/ddd02e71cdbee9a36fa697e3b9168afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d55e5294e8d5332a027d5ef8cdd0b91c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf01cce24cae39fa27acb2d0d7c5f4c5.png)
您最近一年使用:0次
2023-05-17更新
|
76次组卷
|
2卷引用:第34章 锐角三角函数 单元测试卷 人教版(五四制)九年级下册数学
9 . 如图,已知
的直径
,
与
相切于E点,过B点作
,垂足为C,连接
、
.
(1)求证:
;
(2)若
,求图中阴影部分的面积(结果可保留π与根号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454328a8e75953fdb0835ce80d9566e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d05b5b9502c2be337f9be84fe4ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/4/1a1de48e-884b-4cff-a10c-baf15b710f2c.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eafaa53c04502ee12340c131397aa2e0.png)
您最近一年使用:0次
10 . 如图,
的直径
,
为圆周上一点,过点
作
的切线
,过点
作
的垂线
,垂足为
,
与
交于点
,连接
、
.
![](https://img.xkw.com/dksih/QBM/2023/5/12/3236003236487168/3239455517097984/STEM/750b0ee05ba844b0ba5a917294af543c.png?resizew=147)
(1)求证:
;
(2)若
,
,求
的长.
![](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/c5db41a1f31d6baee7c69990811edb9f.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://img.xkw.com/dksih/QBM/2023/5/12/3236003236487168/3239455517097984/STEM/750b0ee05ba844b0ba5a917294af543c.png?resizew=147)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a08599072e368d5a36cf72583853f4c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
您最近一年使用:0次