如图,正五边形
内接于
,P为
上一点,连接
,
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffcf0b442d5ff2ce8efa1a778b4ecd6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
23-24九年级上·天津南开·期末 查看更多[2]
天津市南开区2023-2024学年九年级上学期期末数学试题(已下线)专题14切线长定理、圆内接正多边形 (2个知识点6种题型)-【帮课堂】2023-2024学年九年级数学下册同步学与练(北师大版)
更新时间:2024-01-03 17:30:53
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【推荐2】如图,已知圆心角∠AOB=110°,则圆周角∠ACB的度数为( )
![](https://img.xkw.com/dksih/QBM/2022/1/12/2893007878856704/2928993875066880/STEM/a2034a34-134a-4f63-86cd-42e5e12d4cc6.png?resizew=190)
![](https://img.xkw.com/dksih/QBM/2022/1/12/2893007878856704/2928993875066880/STEM/a2034a34-134a-4f63-86cd-42e5e12d4cc6.png?resizew=190)
A.60° | B.55° | C.50° | D.45° |
您最近一年使用:0次
单选题
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容易
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【推荐1】如图,五边形
是
的内接正五边形,则正五边形的中心角
的度数是( )
![](https://img.xkw.com/dksih/QBM/2022/4/25/2965850327285760/2970264366710784/STEM/afe874c736ab4b168e163d6515dea894.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://img.xkw.com/dksih/QBM/2022/4/25/2965850327285760/2970264366710784/STEM/afe874c736ab4b168e163d6515dea894.png?resizew=134)
A.72° | B.60° | C.48° | D.36° |
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【推荐2】正n边形的中心角是30°,
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
A.6 | B.8 | C.10 | D.12 |
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