观察下列命题:①有一个角是
的等腰三角形是等边三角形;②到线段两端点的距离相等的点在这条线段的垂直平分线上;③有两个角互余的三角形是直角三角形;④全等三角形的周长相等
其中真命题的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e1d0f65817ba32a732040518f41440.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-01-10 15:53:00
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【推荐2】如图,在
中,
,
,若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/18/d3434070-1d35-4152-a7b6-33e0932ad1c9.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/18/d3434070-1d35-4152-a7b6-33e0932ad1c9.png?resizew=164)
A.36° | B.30° | C.25° | D.15° |
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【推荐1】如图所示,三角形ABC中,AB的垂直平分线DE交AC于点D,交AB于点E,如果AC=5,BC=4,则△BCD的周长是( )
![](https://img.xkw.com/dksih/QBM/2020/5/19/2466283768193024/2466713914245120/STEM/b6d9df14-0cfc-41ba-916d-b03521135962.png)
![](https://img.xkw.com/dksih/QBM/2020/5/19/2466283768193024/2466713914245120/STEM/b6d9df14-0cfc-41ba-916d-b03521135962.png)
A.6 | B.7 | C.8 | D.9 |
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【推荐2】如图,四边形
中,
,
,
的垂直平分线交
于
,则
的周长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/b4ae8c96-f438-41e0-8b5c-619964010fd2.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/b4ae8c96-f438-41e0-8b5c-619964010fd2.png?resizew=167)
A.6 | B.8 | C.9 | D.10 |
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【推荐1】如图,点
、
、
、
在☉
上,
,
,则点
到
的距离是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0addac3006a7f99ecb86d656ec111e.png)
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A.![]() | B.![]() | C.3 | D.4 |
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【推荐2】如图,在
中,
,将
绕点C顺时针旋转
得到
,其中点
与点A是对应点,点
与点B是对应点,若点
恰好落在
边上,则点A到直线
的距离等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/9c25a020-e3e1-44d8-a30b-56d9d17859bf.png?resizew=194)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d2eae98e1683fbb9533584450dd696.png)
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A.1 | B.![]() | C.![]() | D.![]() |
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【推荐1】下列命题中,是假命题的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.三个内角都相等的三角形是等边三角形 |
B.有两个内角是![]() |
C.在同一平面内,垂直于同一条直线的两条直线平行 |
D.等腰三角形一腰上的高与另一腰的夹角是![]() ![]() |
您最近一年使用:0次
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【推荐2】下列命题中,假命题是( )
A.若A(![]() ![]() ![]() ![]() ![]() ![]() |
B.如果直线![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
C.两直线平行,同旁内角互补 |
D.相等的两个角是对顶角 |
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