已知平行四边形
中,
,
,点
是
中点,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b852108ed39bbd0d4922d762ad130e09.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0051d92c8639713847682826c2bb9783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e4511cfcd8a9fc594728eabe672b4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe5bec08214644370282923968b62fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b852108ed39bbd0d4922d762ad130e09.png)
更新时间:2018-04-26 15:35:35
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【推荐1】如图,在等腰梯形
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【推荐2】在
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