如图所示,E为正方形ABCD的边BC延长线上一点,且CE=AC,AE交CD于点F,那么∠AFC的度数为( )
A.112.5° | B.125° | C.135° | D.150° |
更新时间:2019-03-15 15:00:47
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【知识点】 根据正方形的性质求角度解读
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【推荐1】如图,正方形ABCD中,以BC为边向正方形内部作等边△BCE.连接AE.DE,连接BD交CE于F,下列结论:①∠AED=150°②△DEF~△BAE;③tan∠ECD=
④△BEC的面积:△BFC的面积(
+1):2,其中正确的结论有( )个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94fd82cde4150e6c9ba75697f468a0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/84270a61-d9a2-4ed7-885a-2270c697f097.png?resizew=131)
A.4 | B.3 | C.2 | D.1 |
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【推荐2】如图,在正方形
中,点M是
上一点,点E是
的中点,
绕点E顺时针旋转
得到
,连接
,
.则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/de1fc4cf-e3e7-4d8e-a7fd-5886c35e16ab.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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