如图,在
中,
,
,点D为
边上的中点,连接
,过点B作
于点E,延长
交
于点F.则
的长为_____ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd0cc95217ffdaed3a7e50746683868.png)
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更新时间:2022-11-08 11:37:00
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