在四边形
中,若
,且
,则四边形
是______ 形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da65df9df70430d0a095297a628f04c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a88028e7f4c3d53335e5f9176dc68c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
22-23高一·全国·课后作业 查看更多[2]
更新时间:2023-01-06 22:52:56
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填空题-单空题
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容易
(0.94)
【推荐1】如图,在正六边形ABCDEF中,点O是对角线AD、BE、CF的交点,在以A、B、C、D、E、F、O为端点的向量中与向量
相等的向量的个数是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfde0038de382d2be9701cea23ef7eb.png)
![](https://img.xkw.com/dksih/QBM/2021/12/1/2863251251535872/2863383243218944/STEM/9ad4aa0b9c3344d59cd8c040634b266f.png?resizew=173)
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【推荐2】如图,在菱形
中,若
,则以下说法中正确的是__________ .(填序号)
①与
相等的向量只有一个(不含
);
②与
的模相等的向量有9个(不含
);
③
的模恰为
模的
倍;
④
与
不平行.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32450995497b9e341be832e9efad3114.png)
①与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
②与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f90e16e18b1e88ebb1ab811d06be76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af955728e5c838b4a5f79aa089c72cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f90e16e18b1e88ebb1ab811d06be76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://img.xkw.com/dksih/QBM/2021/3/19/2681144592236544/2685275900764160/STEM/cf0ceededf944df5b5b3b42899e2a855.png?resizew=173)
您最近一年使用:0次
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名校
解题方法
【推荐1】已知向量
,
满足
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2595b69831f60672869de16908f5feb6.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa3610a990287d3ac756abae406540d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2396cac4b185cf1f1a67dad9248481c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead4767424866f1453c464a93b3ca8fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2595b69831f60672869de16908f5feb6.png)
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【推荐2】已知
为圆
上三点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60bbfb3b293f74a652014328799cedee.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0ae8e92dd3119d41f2c830ea526516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df8184211deef4940ab50b048536351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60bbfb3b293f74a652014328799cedee.png)
您最近一年使用:0次