如图,将两个边长为
的正方形沿对角线剪开,将所得的四个三角形拼成一个大正方形,则这个大正方形的边长是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/2017/11/2/1808585796042752/1809291909144576/STEM/8b31d421-e50f-4f37-8dec-ccd941ec66a4.png?resizew=192)
更新时间:2017-11-03 15:56:43
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