如图1,四边形
是正方形,F是对角线
上一点(点F不与点B,D重合),过点F作
,交
于点E,作
,交
于点G.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/a8c076e5-13c4-471c-9eac-9ae11815ea6a.png?resizew=176)
(1)求证:四边形
是正方形.
(2)如图2,将四边形
绕点D逆时针旋转
,连接
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf6ba26dec47b049e13553e33948cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a32ff42fed45ae870a688fb7103fa72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/a8c076e5-13c4-471c-9eac-9ae11815ea6a.png?resizew=176)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa1b25471d28705d1dda818fc20c8a3.png)
(2)如图2,将四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa1b25471d28705d1dda818fc20c8a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805d1335ede644ed5a27aa232c21fa1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4eccda4edcee29a5f15609e85106df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266448067c16af49b5abf9dd2bff1a14.png)
更新时间:2024-02-27 12:30:32
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【推荐1】如图,在矩形ABCD中,AE平分∠BAD,交BC于点E,过点E作EF⊥AD于点F,求证:四边形ABEF是正方形.
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解答题-问答题
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【推荐2】如图,在
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/7/be267ea5-7f63-4e96-a6ea-4a7e88967055.png?resizew=271)
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef5cf9715725d7bab609ce4ed7108e3b.png)
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【推荐1】如图,已知D、E分别是
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解答题-证明题
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