如图,矩形ABCD中,点E是BC边上的点,BE=2,EC=1,AE=BC,DF⊥AE,垂足为F.则
等于____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89119e212385b76c35698f5cfe54b606.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/6/ee06927c-e705-4e62-a63d-8a83bfe990da.png?resizew=165)
更新时间:2020-03-08 22:21:40
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【推荐1】如图,
中,
,
,D是
上一点,
于点E,
于点F,连接
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【推荐2】如图,BD是矩形ABCD的一条对角线,点E、F分别是BD、DC的中点,若AB=8,BC=6,则AE+EF的长为_____ .
![](https://img.xkw.com/dksih/QBM/2019/5/29/2213958525149184/2214988632424448/STEM/2b8303fe651e431a865f8e2c68b680cd.png?resizew=148)
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【推荐1】如图,
是
的角平分线,
、
分别是边
,
上的点,
与
交于点
,若
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe16b5a4c3d12c0a549e9e4105e1d2db.png)
______ .(提示三角形面积公式:
.)
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【推荐2】已知:在平面直角坐标系中,点A的坐标为
,那么
的值是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6e4de593972b1e5c2e9c01316ddd65.png)
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