如图,
是正五边形
的外接圆,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/2020/4/24/2448426928398336/2449186393112576/STEM/9911d41c1a4c4d8d90ec2fbc248325a1.png?resizew=136)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
![](https://img.xkw.com/dksih/QBM/2020/4/24/2448426928398336/2449186393112576/STEM/9911d41c1a4c4d8d90ec2fbc248325a1.png?resizew=136)
A.50° | B.48° | C.36° | D.30° |
2019九年级下·云南昆明·学业考试 查看更多[3]
2019年云南省昆明市十县区九年级下学期学业水平模拟(二)数学试题2019年云南省昆明市十县区中考数学二模试题(已下线)3.8圆内接正多边形(重点练)-2020-2021学年九年级数学下册十分钟同步课堂专练(北师大版)
更新时间:2020-04-25 17:45:23
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【推荐1】如图,△ABC中,BD平分∠ABC,BC的中垂线交BC于点E,交BD于点F,连接CF.若∠A=60°,∠ABD=24°,则∠ACF的度数为( )
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