如图,四边形ABCD内接于⊙O中,若∠B
130°,则∠AOC
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/6e2a18f5-8700-40cc-994d-3b89e411d40c.png?resizew=97)
更新时间:2021-11-09 10:34:56
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【推荐1】如图,
是半圆O的直径,且
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【推荐2】如图,
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