1 . 如图,四边形
是圆的内接四边形,
,
、
的延长线交于点
.求证:
平分
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb67f27bcda7681b19239a199b4c4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c36ff76f9f1ee12db562cde7a58b8c3.png)
![](https://img.xkw.com/dksih/QBM/2018/10/15/2054409853542400/2059748077608960/STEM/ba59d31e-853f-4f57-bf17-fd8d5365e04d.png?resizew=328)
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2 . 如图,已知
的半径为
,
的半径为
,两圆外切于点
.点
为
上一点,
与
切于点
.若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0385df6c7f8ee7ab503b6ed35933695b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd73875650e1538c4c61d5e16d3db29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0385df6c7f8ee7ab503b6ed35933695b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd73875650e1538c4c61d5e16d3db29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01ba3f329b712e87ead41125cacd34a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d583183429b6b31aa9742eefc67d3181.png)
![](https://img.xkw.com/dksih/QBM/2018/2/22/1887858184478720/1892230558900224/STEM/5e0ca53af3d2480a9698b0e16b278341.png?resizew=227)
您最近一年使用:0次
2018-02-28更新
|
158次组卷
|
2卷引用:江苏省南通市、泰州市2018届高三年级第一次调研测试数学(理)试题
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3 . 选修4—1:几何证明选讲
已知AB是圆O的直径,P是上半圆上的任意一点,PC是
的平分线,
是下半圆的中点.求证:直线PC经过点
.
已知AB是圆O的直径,P是上半圆上的任意一点,PC是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ac852180627c6c38ee0dd36f238ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572054025052160/1572054030991360/STEM/23533b8acbb940a69d45f2b0e9e08808.png)
您最近一年使用:0次
2016-12-03更新
|
537次组卷
|
4卷引用:江苏省南京市联合体学校2018届高三调研测试数学(理)试题
江苏省南京市联合体学校2018届高三调研测试数学(理)试题【全国百强校】江苏省盐城中学2018届高三考前热身2数学试卷2015届江苏省常州市高三上学期期末调研测试理科数学试卷(已下线)2015届江苏省常州市高三上学期期末调研测试理科数学试卷