在正方形ABCD中,AB=3,点E在边CD上,且DE=1,将△ADE沿AE对折到△AFE,延长EF交边BC于点G,连接AG,CF.下列结论,其中正确的有( )个.
(1)CG=FG;(2)∠EAG=45°;(3)S△EFC=
;(4)CF=
GE
(1)CG=FG;(2)∠EAG=45°;(3)S△EFC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/16/50867841-0f6f-4827-ac80-8d1588d05c6b.png?resizew=114)
A.1 | B.2 | C.3 | D.4 |
19-20九年级上·广东深圳·期末 查看更多[5]
广东省深圳市南山区蛇口学校2019-2020学年九年级上学期期末数学试题广东省佛山市南海区桂城街道平洲第二初级中学2022-2023学年九年级上学期第二次大测数学试卷四川省达州市渠县渠县中学2022-2023学年九年级上学期期末数学试题(已下线)27.2.1 平行线分线段成比例(分层练习)-2022-2023学年九年级数学下册同步精品课堂(人教版)(已下线)期末难点特训(四) 选填压轴50道-【微专题】2022-2023学年九年级数学下册常考点微专题提分精练(北师大版)
更新时间:2020-06-30 22:09:45
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【推荐1】如图,已知正方形
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于
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A.①② | B.②③④ | C.①②③ | D.①③④ |
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【推荐2】如图,已知
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【推荐1】正方形ABCD的边长为8,点E、F分别在边AD、BC上,将正方形沿EF折叠,使点A落在
处,点B落在
处,
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/4/5daa3147-67c4-425a-a3f0-ecfe1bdfa65e.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
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A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.连接![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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【推荐2】如图,正方形ABCD中,AB=3,点E在边CD上,且CD=3DE.将△ADE沿AE对折至△AFE,延长EF交边BC于点G,连接AG,CF.下列结论:①点G是BC中点;②∠EAG=45°;③FG=FC.其中正确的是( )
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并延长交
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【推荐2】如图,在Rt△ABC中,∠ACB = 90º,AC = BC = 4,CD⊥AB,垂足为D,E为BC的中点,AE与CD交于点F,则DF的长为( )
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