已知正方形
的边长为4,点
在边
上,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b5045d223ac5bd4a7f225c32a277016.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d46a1abc48b5cf057f576674ecf5e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b5045d223ac5bd4a7f225c32a277016.png)
更新时间:2019-01-04 12:48:40
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