如图,已知
分别为四边形
的内切圆、外接圆,
分别切
于点
,作
分别切
于点
,分别切
于点
,若
,证明:
共点于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6eb482180f24b9000c4355e26ee8c1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9353177e057491904812d73b4957589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf5545bfbe5f5e30d82c83382106c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e8891053ece2e47e45e9d053327965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54bb23e4db21d80d045a94a78b0c205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf5545bfbe5f5e30d82c83382106c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e8891053ece2e47e45e9d053327965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8be79c511c9ea5b672e0ffcd18120a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1fb1fd669a702852e2d9620928c96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ac2c04422301f2464d11753039ed30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/d2b7547a-892d-4b28-971e-d6344b85c082.png?resizew=215)
2019高三·全国·竞赛 查看更多[1]
更新时间:2018-12-28 21:12:47
|
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】已知
、
分别为
的外心、垂心,
为
的中点,
为
的中点,以
为直径的
与
的外接圆
交于异于点
的另一点
,
与
交于点
.证明:
的充分必要条件是
、
、
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd73875650e1538c4c61d5e16d3db29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0385df6c7f8ee7ab503b6ed35933695b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3cf1a8a051292a99906b458b7ad7d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】如图,在圆内接四边形
中,对角线
与
交于点
,且
,
.延长
、
交于点
.证明:
为
的外心.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c03366e8ad89bbf52a24243e94646fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30e50e094cd2849e38859b36aad0b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7807f6a0d316671ed34c23e32fc7408.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/63b1e6ab-0d97-4518-a81f-388d8f48b237.png?resizew=154)
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