名校
1 . 如图,在正方形
中,
分别为
的中点,求证:
(利用向量证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876bb8ce0ca53475fa091ffd18bdc94a.png)
![](https://img.xkw.com/dksih/QBM/2017/3/7/1638695154688000/1644407990149120/STEM/b57ecf0b82934abe834a695cfd971481.png?resizew=131)
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2017-03-15更新
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1584次组卷
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4卷引用:2015-2016学年河北省石家庄市辛集中学高一下学期综合练习(一)数学试卷