已知在
中,
,
平分
,且满足
,则下列四个结论:①
,②
,③
,④
,正确结论的个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5814184fd7f7100332f3761379418bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b5f2391d09eba3db2299f29d2ec2674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eaff2ea302a9ef7e38646457cc4ea25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a651eb577dbada1f29590e558d6f9fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e53217bd2547c38781eb09ddc6abdf.png)
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2024-05-02 16:19:42
|
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名校
【推荐1】如图,在
ABC中,∠BAC=45°,CD⊥AB于点D,AE⊥BC于点E,AE与CD交于点F,连接BF,DE,下列结论中:①AF=BC;②∠DEB=45°,③AE=CE+2BD,④若∠CAE=30°,则
,正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/4ce9feb9-e307-4806-bdc1-7601bfab024e.png?resizew=144)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ba7cf7d1a9d486b8bf304d11883044f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/4ce9feb9-e307-4806-bdc1-7601bfab024e.png?resizew=144)
A.4个 | B.3个 | C.2个 | D.1个 |
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【推荐2】如图,已知△ABC中,AB=AC,∠BAC=90°,直角∠EPF的顶点P是BC中点,两边PE,PF分别交AB,AC于点E,F,给出以下五个结论:①△PFA≌△PEB,②EF=AP,③△PEF是等腰直角三角形,④当∠EPF在△ABC内绕顶点P旋转时(点E不与A,B重合),S四边形AEPF=
S△ABC,上述结论中始终正确的有 ( )
![](https://img.xkw.com/dksih/QBM/2017/12/28/1848251763417088/1854716793978880/STEM/55da1679ee1d47ccb4eae7d934a03b6c.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2017/12/28/1848251763417088/1854716793978880/STEM/55da1679ee1d47ccb4eae7d934a03b6c.png?resizew=155)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐1】如图,在
中,
,F为
中点,D为
上一点,连
于点E,若
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的长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/15/5dbae4fd-1cb5-4696-9f56-cc0cd7cf2b1c.png?resizew=231)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85bd17a07346f180a8d34096684abcad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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A.![]() | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
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【推荐2】如图,在
中,
,
平分
交
于点
,过点
作
于点
,连接
,下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898270845952000/2921370690134016/STEM/f8a970b0-38f8-4097-84fe-080d70e76187.png?resizew=222)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.过点![]() ![]() ![]() ![]() |
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【推荐1】如图,在△ABC中,∠ACB=90°,AC=3、BC=4、P、Q两点分别在AC和AB上.且CP=BQ=1,在平面上找一点M.以A、P、Q、M为顶点画平行四边形,这个平行四边形的周长的最大值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/b0a9145a-c23c-4e92-8d24-10d6cd1014ff.png?resizew=152)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/b0a9145a-c23c-4e92-8d24-10d6cd1014ff.png?resizew=152)
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【推荐2】如图,正方形
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上一点,
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于点F,连接
,给出下列五个结论:①
;②
且
;③
;④
的最小值为
;⑤
,其中正确的结论是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/27/e3bbd6c8-f9d6-42ee-b249-027dccf99969.png?resizew=163)
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A.①②③④ | B.②③④ | C.③④⑤ | D.②③④⑤ |
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【推荐1】如图,
是
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的中点,
在
上.下列结论:①
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;③四边形
是正方形;④
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![](https://img.xkw.com/dksih/QBM/2020/9/3/2541907815718912/2542385099079680/STEM/94315c5e-af03-407f-8bf9-eaf325a1fc02.png)
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A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
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【推荐2】如图,在矩形ABCD中,
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![](https://img.xkw.com/dksih/QBM/2022/4/14/2958005257224192/2961582167769088/STEM/261ea0af-56c4-44d4-8b85-b65fea8f9c7e.png?resizew=175)
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A.①②③④ | B.①②④ | C.①②③ | D.①② |
您最近一年使用:0次