如图,四边形内接于
,若它的一个外角
,则
的度数为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84c6dc42c238cae1497039e9776258f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/d9c8c0dc-13ca-49af-a6fa-bd0899fd5282.png?resizew=195)
更新时间:2022-10-29 17:21:32
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【知识点】 已知圆内接四边形求角度解读
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较易
(0.85)
【推荐1】如图,四边形
内接于
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/29/b7a2b5ae-5976-45ed-bbca-314cf5c73e1f.png?resizew=132)
(1)
的度数为___________ ;
(2)
的半径为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207be8e34da2b04f5dfe7a69be80d479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/29/b7a2b5ae-5976-45ed-bbca-314cf5c73e1f.png?resizew=132)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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填空题
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较易
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【推荐2】如图,四边形ABCD内接于⊙O,∠A=110°,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718522355081216/2787314075566080/STEM/04e1b09e-3eeb-4c6b-a1a5-62715f4a0636.png)
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