如图,将一张三角形纸片
沿过点
的直线折叠,使点
落在
边上的点
处,折痕为
,则下列说法错误的是( )
![](https://img.xkw.com/dksih/QBM/2021/6/29/2753484034514944/2788825464184832/STEM/fc7bff71-79e1-4c86-833d-fe5d6871681e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2021/6/29/2753484034514944/2788825464184832/STEM/fc7bff71-79e1-4c86-833d-fe5d6871681e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2021-08-18 14:22:50
|
相似题推荐
单选题
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【推荐1】如图,四边形
内接于
,点P为边
上任意一点(点P不与点A,D重合),连接
.若
,则
的度数可能为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/85f91bb9-5015-4491-929a-433c8021d287.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/85f91bb9-5015-4491-929a-433c8021d287.png?resizew=172)
A.40° | B.50° | C.60° | D.70° |
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【推荐2】在
中,
,
,点D在边
上,
,点E、F在线段
上,
,若
的面积为18,则
与
的面积之和为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/5034e480-cf55-4125-92b6-a91668a7a0e6.png?resizew=111)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
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A.6 | B.9 | C.12 | D.16 |
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【推荐1】将一张正方形纸片ABCD按如图所示的方式折叠,CE、CF为折痕,点B、D折叠后的对应点分别为B'、D',若∠ECF=21°,则∠B'CD'的度数为( )
![](https://img.xkw.com/dksih/QBM/2022/1/5/2887713171595264/2888445989797888/STEM/37182d83e7a342419aabd75a4523f806.png?resizew=128)
![](https://img.xkw.com/dksih/QBM/2022/1/5/2887713171595264/2888445989797888/STEM/37182d83e7a342419aabd75a4523f806.png?resizew=128)
A.35° | B.42° | C.45° | D.48° |
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【推荐2】如图,
是在
斜边
上的高,将
沿
所在直线折叠,点
恰好落在
的中点E处,则
等于( ).
![](https://img.xkw.com/dksih/QBM/2020/4/6/2435642670850048/2436343425441792/STEM/046b56b9-52d7-422e-b275-a84f5e8bc17f.png?resizew=138)
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![](https://img.xkw.com/dksih/QBM/2020/4/6/2435642670850048/2436343425441792/STEM/046b56b9-52d7-422e-b275-a84f5e8bc17f.png?resizew=138)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,将一张对边互相平行的纸条沿EF折叠,若∠EFB=32°,则①
;②∠AEC=148°;③∠BGE=64°;④∠BFD=116°,则下列结论正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/a702d96d-1ed1-4ba3-9f11-c70a1d24640d.png?resizew=253)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8e112ae15c97b1afa27d237bd7dd35.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/a702d96d-1ed1-4ba3-9f11-c70a1d24640d.png?resizew=253)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】如图,在
中,
,
,
是
边上一点,连接
,将
沿
翻折,使A点落在
边上的
点处,则
为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/86b60073-904b-4281-817a-d29ff049f7be.png?resizew=202)
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A.![]() | B.![]() | C.![]() | D.![]() |
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