下列各命题的逆命题是假命题的是( )
A.平行四边形的两组对边分别相等 | B.若![]() ![]() |
C.全等三角形的对应边相等 | D.等边三角形三个内角都等于![]() |
更新时间:2023-06-08 16:57:46
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【推荐1】如图,
,等边
的顶点
,
分别在
,
上,若
,则
的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/027830fc47290062692964077ee481e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b65ca62ce90b4879f58884e826c669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/20/af77994c-f5b4-45bd-8764-4fb234bdb898.png?resizew=215)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,等边△ABC的三条角平分线相交于点O,过点O作EF
BC,分别交AB于E,交AC于F,则图中的等腰△有( )个
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/74d27408-80a4-494b-aaad-b2cdf68746f9.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/74d27408-80a4-494b-aaad-b2cdf68746f9.png?resizew=166)
A.4 | B.5 |
C.6 | D.7 |
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【推荐1】如图,在
中,
的角平分线
交边
于点E,
的角平分线
交边
于点F,若
,
,则线段
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
A.1.5 | B.2 | C.2.5 | D.3 |
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【推荐2】如图,
的对角线
,
相交于点O,E是
的中点,且
,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47eff421a959e86eef9d152cbd0abc49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/3/38b0c914-d0d9-446b-a41f-187bd00183c2.png?resizew=210)
A.20 | B.16 | C.12 | D.8 |
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【推荐1】下列命题为假命题的是( )
A.全等三角形的对应边相等 | B.角的平分线上的点到角的两边的距离相等 |
C.有两边和一角分别相等的两个三角形全等 | D.斜边和一条直角边分别相等的两个直角三角形全等 |
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【推荐2】下列命题的逆命题是假命题的是( )
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若两个角的和为90°,则这两个角互余 |
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【推荐1】现有下列命题:
①若
,则
;
②命题“若
则
”的逆命题;
其中真命题的个数有( )
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3d595c5f2023c9f9456ac24a9f7a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52cba006a516755f299a866bdd8242e9.png)
②命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75ce26e1400660921a4e059819c78924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681f8d91b64433d0cb2a1b5bc14b1d0b.png)
其中真命题的个数有( )
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】下列命题的逆命题不 成立的是( )
A.如果两个实数相等,那么它们的平方相等 |
B.相等的角是对顶角 |
C.全等三角形的对应边相等 |
D.同旁内角互补,两条直线平行 |
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