如图,正方形ABCD的边长为5,将边AB绕点A逆时针旋转至
,连接
,过点D作
直线
于点E,连接
,CE,
,若四边形
是平行四边形,则平行四边形
的周长为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
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20-21九年级下·浙江杭州·期末 查看更多[1]
(已下线)【新东方】【2021.5.20】【WZ】【初三下】【初中数学】【WZ00152】
更新时间:2021-06-02 05:27:53
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【推荐1】如图,正六边形
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【推荐2】如图,
中,
,D为边
上一动点(不与B,C重合),
和
的垂直平分线交于点E,连接
、
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和
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【推荐1】如图,在
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【推荐2】如图,已知
,
,
,垂足为
,点
分别是
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【推荐1】如图,四边形ABCD是正方形,点E是BC延长线上的一点,且AC=CE,则∠E=____________
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/bc17f0cf-2cfb-45bf-a4dd-da860b4ce7e6.png?resizew=192)
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【推荐2】以正方形ABCD一边AB为边作等边三角形ABE,则∠CED=_____ .
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