如图,在
中,点
在
边上,点
关于直线
的对称点
落在
的延长线上,若
垂直平分
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/3e05680d-cd4f-4e17-8ffc-00e2e67f3ad0.png?resizew=121)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2abe5da7ee1a2ff3ca5dec7a2d04dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/3e05680d-cd4f-4e17-8ffc-00e2e67f3ad0.png?resizew=121)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2022-12-07 11:25:01
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【推荐1】如图,在
中,
,分别以点
、
为圆心,大于
为半径画弧,两弧相交于点
、
,作直线
,分别交
、
与点
、
,若
的周长是
,则
的长等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/3958a70b-1a94-4a95-91a1-f8b91de3efb7.png?resizew=201)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e9be43244c98e1ebb041ce09d191c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d49404351575703cfe8325d1352ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1275768bdac801185ef152290a85ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e62a0233031d4e5ecc0b60b51ac25ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/3958a70b-1a94-4a95-91a1-f8b91de3efb7.png?resizew=201)
A.1 | B.1.5 | C.2 | D.2.5 |
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【推荐2】如图,分别以点A,B为圆心,以大于
同样长为半径作弧,两弧相交于C,D两点,连接AB,CD,AC,BC,AD,BD,则下列说法中正确的是( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/94101220-f168-4ded-90a8-619256e53010.png?resizew=109)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d49404351575703cfe8325d1352ec9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/94101220-f168-4ded-90a8-619256e53010.png?resizew=109)
A.![]() | B.CD垂直平分AB,但AB不一定垂直平分CD |
C.![]() ![]() | D.CD与AB互相垂直平分 |
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【推荐1】如图,已知
平分
,
于点E,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84a7cd47edd57011a3816f7180995b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72379f374b0deab19f62527f031006a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696a24651346e1ab45f6480e7c62a43a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5277fa450a0c513a86a74420f8ee99f6.png)
A.1 | B.2 | C.3 | D.4 |
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【推荐2】如图,在
中,
,点E是
上的点,且
,
垂直平分
,垂足是D,如果
,那么
等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/b9ff708e-9330-40f7-9310-6c2461b3c91e.png?resizew=228)
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14960e0e112a1150f8d56c892e6c077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/b9ff708e-9330-40f7-9310-6c2461b3c91e.png?resizew=228)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】在
中,AB=AC,∠A=40°,AB的垂直平分线MN交AC于点D,则∠DBC的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.30° | B.40° | C.50° | D.60° |
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【推荐2】下列说法:①等腰三角形的两底角相等;②角的对称轴是它的角平分线;③成轴对称的两个图形中,对应点的连线被对称轴垂直平分;④全等三角形的对应边上的高相等;⑤在直角三角形中,如果有一条直角边长等于斜边长的一半.那么这条直角边所对的角等于30°.以上结论正确的个数( )
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐1】如图,
与
关于直线
对称,
,
,则
等于( )
![](https://img.xkw.com/dksih/QBM/2021/11/19/2854713804480512/2858074931257344/STEM/c777573f-68c9-4c2c-940b-241531dfda38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16efb0a6f20f07b7c178c4c3018ca47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135b3a20bc2e6e7147f017d097895e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://img.xkw.com/dksih/QBM/2021/11/19/2854713804480512/2858074931257344/STEM/c777573f-68c9-4c2c-940b-241531dfda38.png)
A.36° | B.100° | C.80° | D.154° |
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【推荐2】如图,△ABC与△
关于直线l对称,若∠A=50°,
则∠
度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1264a2e3609e1c274acb89b5ea5019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc5e266182cde0339f712bdca82a0b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
A.110° | B.70° | C.90° | D.30° |
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