如图,在正五边形
中,连接
,则
的度数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f27f36703e71f271a501949abfa342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/13b4a429-b21a-44e4-aeac-9837e32ddcdb.png?resizew=156)
更新时间:2024-03-21 18:56:33
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【推荐1】如图,在
中,
,
,
,
分别是边
、
上的点,将
沿
折叠,使点
落在
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【推荐2】如图,在Rt△ABC中,∠ACB=90°,∠B=25°,D是AB的中点,则∠ADC=____ .
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【推荐1】如果一个三角形的两个内角α与β满足2α+β=90°,那么我们称这样的三角形为“准互余三角形”.若
是“准互余三角形”,∠C>90°,∠A=20°,则∠B=_______ .
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【推荐2】在△ABC中,∠A=∠B=
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【推荐1】如图,在正五边形
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为边向内作正
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【推荐2】如图,
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