在圆内接四边形
中,
的度数之比为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7960538cb70fcf641b94864a90190d.png)
____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8551fd9f84d6873051bde12ecb791596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a340c38f33a843d659ce1e6acf8c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7960538cb70fcf641b94864a90190d.png)
2022九年级上·全国·专题练习 查看更多[1]
(已下线)24.1 圆的有关性质(习题)-2022-2023学年九年级数学上册同步精讲精练(人教版)
更新时间:2024-01-27 00:40:38
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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,在圆内接四边形ABCD中,若∠A、∠C的度数之比为4:5,则∠C的度数是_____ .
![](https://img.xkw.com/dksih/QBM/2019/5/23/2209712010395648/2212166394249217/STEM/6a9c3ccfb9ec4c589e41904a99cd7a21.png?resizew=132)
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【推荐2】四边形
是
的内接四边形,连接
、
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afde09d82ae96f00c135732baee64776.png)
___________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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