如图,菱形
的面积为
,正方形
的面积为
,则菱形的边长为( )
![](https://img.xkw.com/dksih/QBM/2019/10/16/2313165767507968/2314088337350656/STEM/c6dae7f18eff4909be0c348e165fb55f.png?resizew=221)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c14b9dc24aae81f712446b8fa57d814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b42c7b2194106c6a3a45f591eada57.png)
![](https://img.xkw.com/dksih/QBM/2019/10/16/2313165767507968/2314088337350656/STEM/c6dae7f18eff4909be0c348e165fb55f.png?resizew=221)
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更新时间:2019-10-19 14:12:34
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【推荐1】如图,菱形
中,点
、
分别是
、
的中点,若
,
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2019/8/26/2277082961428480/2277313273241600/STEM/6954e46487f44a7486d22850ab1742c1.png?resizew=180)
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【推荐2】如图,两张宽度为1的矩形纸片交叉叠放在一起,若∠ABC=45°,则重合部分四边形ABCD的周长为( )
![](https://img.xkw.com/dksih/QBM/2022/5/9/2975759668486144/3045122020786176/STEM/579b754a81104670954a55dbe0797124.png?resizew=129)
![](https://img.xkw.com/dksih/QBM/2022/5/9/2975759668486144/3045122020786176/STEM/579b754a81104670954a55dbe0797124.png?resizew=129)
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【推荐1】如图,正方形ABCD的边长为4.对角线AC,BD交于点O,E是AC延长线上一点,且CE=CO.则BE的长度为( )
![](https://img.xkw.com/dksih/QBM/2021/7/3/2756020254720000/2759998571757568/STEM/07b63e4ba2fb4bfabfc0723ffe1580cc.png?resizew=159)
![](https://img.xkw.com/dksih/QBM/2021/7/3/2756020254720000/2759998571757568/STEM/07b63e4ba2fb4bfabfc0723ffe1580cc.png?resizew=159)
A.4![]() | B.6![]() | C.2![]() | D.4![]() |
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【推荐2】如图,在正方形ABCD中,将边BC绕点B逆时针旋转至BC',连接CC',DC',若∠CC'D = 90°,BC'=
,则线段C'D的长度为( )
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961545065644032/2962288067026944/STEM/6dbf3343-db7f-4761-8403-cbfca120fd98.png?resizew=142)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
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