如图,在菱形
中,对角线
相交于点O,点M,N分别是边
的中点,连接
,若
,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e5c0dd1fab3ddac335bddbe89f0d6e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/118fe035a89705d51fc120f623d456b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bd41f759c5f67608477a3fe8dbe42d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e47bb98258ebfcf1d8ad4bac10b7ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1571e90fde63a16c31abea696273b849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a0397c811fe80c80ecd5b871201987.png)
A.3 | B.![]() | C.2 | D.![]() |
2023·河南信阳·三模 查看更多[9]
更新时间:2023-08-22 12:22:16
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【推荐1】已知钓鱼杆
的长为10米,露在水上的鱼线
长为
,某钓鱼者想看看鱼钩上的情况,把鱼竿
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A.4米 | B.3米 | C.2米 | D.1米 |
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【推荐2】如图,一座石拱桥是圆弧形,其跨度(
长)为
米,半径为
米,则拱高(
长)为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/f955131e-2f1c-4d1a-bcfc-23f22b4fe115.png?resizew=119)
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【推荐1】如图,已知
中,
,那么
边上的中线
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6017efdb5ce7d08e2cd904b97556ac37.png)
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【推荐2】下列说法正确的是( )
A.平行线间的距离处处相等 | B.菱形的对角线相等 |
C.对角线互相垂直的四边形是平行四边形 | D.直角三角形斜边中线等于直角边的一半 |
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【推荐1】如图.在平面直角坐标系
中,菱形
的顶点
在坐标原点,边
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轴的负半轴上,顶点
的坐标为
,反比例函数的图象与菱形对角线
交于
点,连接
,当
轴时,k的值是( )
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ca6d348c4c0f53eb995246e1cb5ae7.png)
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【推荐2】在菱形ABCD中,两条对角线AC=10,BD=24,则此菱形的边长为( )
A.14 | B.25 | C.26 | D.13 |
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