如图,在
中,
,
的垂直平分线交
、
于点M、N,若
,
,则
的长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b40c2b0ab8e1cfe5112d428b4b829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dafebaaf13781120dc57c277d0267c0.png)
A.2 | B.3 | C.4 | D.5 |
更新时间:2024-03-15 23:17:58
|
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名校
【推荐1】如图,已知在△ABC中,∠ABC<90°,AB≠BC,BE是AC边上的中线.按下列步骤作图:①分别以点B,C为圆心,大于线段BC长度一半的长为半径作弧,相交于点M,N;②过点M,N作直线MN,分别交BC,BE于点D,O;③连接CO,DE.则下列结论错误的是( )
A.OB=OC | B.DE![]() | C.DB=DE | D.![]() ![]() |
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【推荐2】如图,点
是
内一点,
,
,则以下结论:①
②
③
平分
④
与
的位置关系是互相垂直.其中正确的有( )个
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758999437090816/2824431605702656/STEM/9232ea60-d386-4b75-9f31-0c15c09f5969.png?resizew=147)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e853b053d23277b0874566c0e9fab77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed1b0a312e0ddf54abbbade60f2ca21.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758999437090816/2824431605702656/STEM/9232ea60-d386-4b75-9f31-0c15c09f5969.png?resizew=147)
A.0 | B.1 | C.2 | D.3 |
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【推荐1】如图,在
中,
,
,
,将
绕点
逆时针旋转,使点
落在线段
上的点
处,点
落在点
处,则
、
两点间的距离为( )
![](https://img.xkw.com/dksih/QBM/2020/11/9/2589203539230720/2594789508612096/STEM/ebacddf1-6d44-4971-9d2d-f3828c0bfe85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,
的半径为5,弦
,
,垂足为点P,则CP的长等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771b610e4ddefa739a985d1e5462ce5a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/7/44eab472-4714-4b7e-b641-ae1c674b302d.jpg?resizew=130)
A.2 | B.2.5 | C.3 | D.4 |
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