1 . 在平行四边形
中,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b225e4f9a9cb08398278a2518ce17373.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f18365bbdbfe48e65d1deed95c2632c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479d5115674f8f228e5b7cbc542c695e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b225e4f9a9cb08398278a2518ce17373.png)
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解题方法
2 . 已知M为
的边
的中点,N为
内一点,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b4f5db3a7ec1315d779bab301501d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bce27229d1eee22ce2b69efb3d0b37f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次