名校
1 . 如图,
、
分别是圆
的切线和割线,其中
为切点,
为切线
的中点,弦
、
相交于点
,弦
延长线上的点
,满足
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3bbc2f154292f5d767fa24bc3f9d9d.png)
求证:、
、
三点共线的充分必要条件是
、
、
三点共线.
![](https://img.xkw.com/dksih/QBM/2017/8/2/1743616646004736/1745775321595904/STEM/de21a44633ca449299815c7b70691184.png?resizew=214)
您最近一年使用:0次
2010·辽宁沈阳·一模
名校
2 . 选修4—1:几何证明选讲
如图,⊙
的直径
的延长线与弦
的延长线相交于点
,
为⊙
上一点,AE=AC ,
交
于点
,且
,
(1)求
的长度.
(2)若圆F且与圆
内切,直线PT与圆F切于点T,求线段PT的长度
如图,⊙
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/9b394cbb08bb4172b6f683d6d56d6e50.png)
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/350a704761f9467f8c4afa5481841a93.png)
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/667c27d748924846b3fe0a8b796f7611.png)
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/6f5023d9d77045569aea4e23aefffb2c.png)
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/e630d8135d4a42eeac25fce4d7c4f4aa.png)
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/9b394cbb08bb4172b6f683d6d56d6e50.png)
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/0d6b089decd74c2d90a9f8349e6fb084.png)
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/350a704761f9467f8c4afa5481841a93.png)
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/609eaf95ae7c4ec9beab6590288546c3.png)
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/cc991d1fa6f0480793c189a4a91dc30a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
(2)若圆F且与圆
![](https://img.xkw.com/dksih/QBM/2010/4/17/1569698449612800/1569698454904832/STEM/9b394cbb08bb4172b6f683d6d56d6e50.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/4a3efc5b-125f-4950-9f60-1200190599ea.png?resizew=198)
您最近一年使用:0次
2016-12-03更新
|
340次组卷
|
5卷引用:2014-2015学年湖南浏阳一中高二下学期期末理科数学试卷
2014-2015学年湖南浏阳一中高二下学期期末理科数学试卷湖南省长沙市第一中学2016-2017学年高二下学期模块性检测数学(理)试题(已下线)辽宁省沈阳第十中学2010届高三高考模拟考试数学试题(理科)2015届山西省太原市五中高三5月月考理科数学试卷2015届山西省太原市五中高三5月月考文科数学试卷
3 . 选修4—1:几何证明选讲
如图,正方形
边长为2,以
为圆心、
为半径的圆弧与以
为直径的半圆
交于点
,连结
并延长交
于点
.
![](https://img.xkw.com/dksih/QBM/2015/11/24/1572303048089600/1572303053774848/STEM/2b0f6c30d08f4e0cb3a387d46d38108a.png)
(1)求证:
;
(2)求
的值.
如图,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2015/11/24/1572303048089600/1572303053774848/STEM/2b0f6c30d08f4e0cb3a387d46d38108a.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2015/11/24/1572303048089600/1572303053774848/STEM/f517e292c11c41738576ba48ba458eee.png)
(2)求
![](https://img.xkw.com/dksih/QBM/2015/11/24/1572303048089600/1572303053774848/STEM/b8c0ccf4209b4eb19bfe65d27a72052d.png)
您最近一年使用:0次
2016-12-03更新
|
189次组卷
|
4卷引用:2016届湖南省长沙市一中高三上学期月考五文科数学试卷
4 . 已知
是
的外角
的平分线, 交
的延长线于点
,延长
交
的外接圆于点
,连接
.
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579006263427072/1579006264107008/STEM/f86357e968244460ba03d6bd37dc1d11.png)
(1)求证:
;
(2)若
是
外接圆的直径,
, 求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68806d81b6291afa517f3b6a58aa46b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa175408eddbdfddfbe9701646d62b92.png)
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579006263427072/1579006264107008/STEM/f86357e968244460ba03d6bd37dc1d11.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07b92b8282c7fd1158b3b5098e38c39.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81eb721cdb5b39bd3b27e182c3647344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
2016-12-04更新
|
170次组卷
|
5卷引用:2016届湖南省高考冲刺卷(理)(三)数学卷
5 . 选修4-1:几何证明选讲
如图,
是
的外接圆,
平分
交
于
,交
的外接圆于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e28ce60503fab70ce1797449d90dadc.png)
![](https://img.xkw.com/dksih/QBM/2016/8/24/1572992647012352/1572992653017088/STEM/95e3c1e5095f4da7a02f36860a79216b.png)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca52f3cb02ead22f72cfa5f4e5629c1.png)
(2)若
求
的长.
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880be04496b4e06b1c47d433d880b442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6062582a0a1679aa777451f25008411d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e28ce60503fab70ce1797449d90dadc.png)
![](https://img.xkw.com/dksih/QBM/2016/8/24/1572992647012352/1572992653017088/STEM/95e3c1e5095f4da7a02f36860a79216b.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca52f3cb02ead22f72cfa5f4e5629c1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291eebf2af8ad9b9728548da01cab285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
6 . 选修4-1:几何证明选讲
如图,圆
是
的外接圆,
是
的中点,
交
于
.
![](https://img.xkw.com/dksih/QBM/2016/10/31/1573101706616832/1573101712711680/STEM/da5dea06400c4783b9c5f7d2caf7482a.png)
(Ⅰ)求证:
;
(Ⅱ)若
,点
到
的距离等于点
到
的距离的一半,求圆
的半径
.
如图,圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2333da32638ec636fa1e69e750ca4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e262f59351803e420bf1226c95e4bba.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2016/10/31/1573101706616832/1573101712711680/STEM/da5dea06400c4783b9c5f7d2caf7482a.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c785dd3acc900f2df19930dcb0b816c.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73c03338db66b081700f70bcf9a0989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](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/11bc05f41215f9894e11d1df0465751a.png)
您最近一年使用:0次
2016-12-04更新
|
146次组卷
|
2卷引用:2017届湖南永州市高三高考一模考试数学(理)试卷
7 . 选修4-1:几何证明选讲
如图
是
直径,
是
切线,
交
于点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e28ce60503fab70ce1797449d90dadc.png)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416605102080/1572416610844672/STEM/8612f92e45834bfc900a0f56b646e232.png)
(1)若
D为
中点,求证:
是
切线;
(2)若
,求
的大小.
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6910fa3b46db8c6e4753920a39ae97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6910fa3b46db8c6e4753920a39ae97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6910fa3b46db8c6e4753920a39ae97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e28ce60503fab70ce1797449d90dadc.png)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416605102080/1572416610844672/STEM/8612f92e45834bfc900a0f56b646e232.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e28ce60503fab70ce1797449d90dadc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6910fa3b46db8c6e4753920a39ae97a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db966856ec2cbe925bdf8ee29fc93611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0427054c47e348f35771872fd0215a8a.png)
您最近一年使用:0次
8 . 选修4-1:几何证明选讲
如图,
是
的直径,
是
上的点,
是
的平分线,过点
作
,交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573024802406400/1573024808894464/STEM/84902b9bf855499b96ba3e3e126b5b6a.png)
(1)求证:
;
(2)过
点作
,垂足为
,求证:
.
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880be04496b4e06b1c47d433d880b442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880be04496b4e06b1c47d433d880b442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6062582a0a1679aa777451f25008411d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535a65c61f47d2b893706d4bc3499e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573024802406400/1573024808894464/STEM/84902b9bf855499b96ba3e3e126b5b6a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412e83a76b740809cc67f48053586e4c.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4fedfec2258cee649e03043bd45627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2d7f49c2ef973e8241da30b70104d6.png)
您最近一年使用:0次
2016-12-04更新
|
127次组卷
|
2卷引用:2016届湖南宁远县一中高三下学期模拟考试数学(理)试卷
2012·河南焦作·一模
9 . 在
中,AB=AC,过点A的直线与其外接圆交于点P,交BC延长线于点D.
![](https://img.xkw.com/dksih/QBM/2012/7/12/1570923707105280/1570923712651264/STEM/13cf603650fe4de19d4d0d65cea4b9fc.png)
(1)求证:
;
(2)若AC=3,求
的值.
![](https://img.xkw.com/dksih/QBM/2012/7/12/1570923707105280/1570923712651264/STEM/4068bd6d669d4586b69702cb3762e8c2.png)
![](https://img.xkw.com/dksih/QBM/2012/7/12/1570923707105280/1570923712651264/STEM/13cf603650fe4de19d4d0d65cea4b9fc.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2012/7/12/1570923707105280/1570923712651264/STEM/0a245338e40a4c728e67305b45866c4f.png)
(2)若AC=3,求
![](https://img.xkw.com/dksih/QBM/2012/7/12/1570923707105280/1570923712651264/STEM/3d841a1467fa49a59809ed6a011bc517.png)
您最近一年使用:0次
2016-12-02更新
|
349次组卷
|
9卷引用:2016届湖南省长沙市一中高三月考八理科数学试卷
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10 . 选修4-1:几何证明选讲
如图,四边形
外接于圆,
是圆周角
的角平分线,过点
的切线与
延长线交于点
,
交
于点
.
![](https://img.xkw.com/dksih/QBM/2016/9/12/1573015911538688/1573015918010368/STEM/e40e8d2e5f3446c2aeb156a47188a259.png)
(1)求证:
;
(2)若
是圆的直径,
,求
的长.
如图,四边形
![](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/cd777f9452cb8b56d8a0d3b07d15c19f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2016/9/12/1573015911538688/1573015918010368/STEM/e40e8d2e5f3446c2aeb156a47188a259.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73c8a92b36b72cc4441fd0a9013f841.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f03dab955d3953261e1f3f437f6128f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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