在平行四边形
中,
,
,
为
的中点,若
,则
的长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3058729868c4954e23f8c17606b1442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
更新时间:2017-02-08 11:30:34
|
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填空题-单空题
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较易
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名校
解题方法
【推荐1】在矩形
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/257aec22aa01438d2a01ff275546ed04.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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您最近一年使用:0次
填空题-单空题
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较易
(0.85)
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解题方法
【推荐2】在△ABC中,
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,
表示![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658ff9921ff96972b0fc95360bb0c65b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c8ef8936178dc23e8fc4aa726bdd36.png)
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您最近一年使用:0次
填空题-单空题
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【推荐1】如图,设
中的角
所对的边是
,已知
,
,点
分别为边
上的动点,线段
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,且
,若
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__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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