如图,四边形
内接于
,
为
延长线上一点,
,则
的度数为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/416e6bbc9bf3fbbc7abcf2b21f972711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1da12b51149bf0b494d8124e20489e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://img.xkw.com/dksih/QBM/2021/12/24/2879515681669120/2884246586146816/STEM/ca209ac8-4fe4-40a0-b17d-ea5f8d495f80.png?resizew=181)
更新时间:2021-12-31 09:57:36
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【知识点】 已知圆内接四边形求角度解读
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【推荐1】如图,四边形ABCD内接于⊙O,∠AOC=140°,则四边形ABCD的外角∠CDM=_____ °.
![](https://img.xkw.com/dksih/QBM/2019/12/11/2352683683889152/2354118062661632/STEM/c72b02a3459c4a02909f078a8b6d57cc.png?resizew=209)
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【推荐2】
ABC为⊙O的内接三角形,若∠AOC=160°,则∠ABC的度数是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
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