如图,在
中,点D是BC的中点,点E、
分别是线段AD及其延长线上,且
,给出下列条件:①
;②
;③
,从中选择一个条件使四边形
是菱形,并给出证明,你选择的条件是________ (只填写序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3abf3173133683369785897e67fa84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7faabc484ce3666706c1beffda4bcfe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fb90434b6da93bdc6590f769ef118b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80434549c8123da852136403259c376.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49404e6b19a342401a80d9feb1144605.png)
![](https://img.xkw.com/dksih/QBM/2018/11/5/2069243990966272/2070293545959425/STEM/d358b05574e649e2907f625830ac5e25.png?resizew=229)
更新时间:2018-11-07 10:05:54
|
【知识点】 添一个条件使四边形是菱形解读
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