如图,在矩形纸片ABCD中,
,
,点E是AB的中点,点F是AD边上的一个动点,将
沿EF所在直线翻折,得到
,连接
,
则当
是直角三角形时,FD的长是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cde52e02168c74b4b1c0a8ce09287df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a21897349d3d7c94419692106887153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dddd3f1d5e8f341f598d99ce04683fd9.png)
![](https://img.xkw.com/dksih/QBM/2022/1/10/2898420651114496/2901597200834560/STEM/3383475f-d0c9-4d20-b7ce-166febc6ced6.png?resizew=280)
更新时间:2022-01-24 22:17:31
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