如图,CB=CA,∠ACB=90°,点D在边BC上(与B、C不重合),四边形ADEF为正方形,过点F作FG⊥CA,交CA的延长线于点G,连接FB,交DE于点Q,对于下列结论:①AC=FG;②四边形CBFG是矩形;③△ACD∽△FEQ.其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986257910300672/2989896969240576/STEM/a6e985de-7c28-4afb-995a-d18c7c568504.png?resizew=145)
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986257910300672/2989896969240576/STEM/a6e985de-7c28-4afb-995a-d18c7c568504.png?resizew=145)
A.①②③ | B.①② | C.①③ | D.②③ |
更新时间:2022-05-29 16:23:52
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【推荐1】下列命题的逆命题是真命题的是( )
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【推荐2】如图,在矩形ABCD中,E是AB边的中点,沿EC折叠矩形ABCD,使点B落在点P处,折痕为EC,连结AP并延长AP交CD于F点,连结CP并延长交AD于点Q.给出以下结论:①四边形AECF为平行四边形;②∠PBA=∠APQ;③△FPC为等腰三角形;④△APB≌△EPC.其中正确结论为( )
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【推荐1】依据所标数据,下列一定为矩形的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/fc89c793-46f7-4ffa-b93c-82659e26740e.png?resizew=373)
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【推荐2】在
中,
,点
是
的中点,求证:
.
证明:如图,延长
至点
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,
.
……
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.
下面是“……”部分被打乱顺序的证明过程:①
;②
四边形
是平行四边形;③
四边形
是矩形;④
,
.则正确的顺序( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
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证明:如图,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
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……
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下面是“……”部分被打乱顺序的证明过程:①
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【推荐1】如图,点
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对角线
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作
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【推荐2】如图,四边形ABCD是正方形,点E,F分别在边CD,BC上,点G在CB的延长线上,DE=CF=BG.下列说法:①将△DCF沿某一直线平移可以得到△ABG;②将△ABG沿某一直线对称可以得到△ADE;③将△ADE绕某一点旋转可以得到△DCF.其中正确的是( )
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【推荐1】如图,在正方形ABCD中,E为边AD上的点,点F在边CD上,且CF=3FD,∠BEF=90°,若AB=4,延长EF交BC的延长线于点G,则BG的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/3c058263-3619-4ae8-9278-d17813b9046a.png?resizew=178)
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