如图,在
ABC中,AB=AC,∠BAC=120°,AB的垂直平分线交AB点E,交BC于点F,若BF=2,则BC的长为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844821154701312/2901403838955520/STEM/fd6cf106-f7b8-4a1d-808c-6cf0c9f83f9b.png?resizew=231)
更新时间:2022-02-15 14:39:15
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【推荐1】如图,在△ABC和△ADE中,∠BAC=∠DAE=90°,AB=AC,AD=AE,点C、D、E在同一条直线上,连结BD、BE,下面四个结论:①BD=CE;②BD⊥CE;③∠ACE+∠DBC=45°;④BE2=2(AB2+AD2),其中正确的结论是 ___ (只需填写序号).
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