如图,在等边三角形
中,点
,
分别在
,
上,沿
把
进行翻折,使点
的对称点
落在边
上.若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6137184439c684aabc264e804529aa03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a016fd940b01e524afe2aaeafb5768.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/15762fbf-c589-43f5-bd03-cfd007f796aa.png?resizew=148)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-11-26 20:58:36
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【推荐1】如图,△ABC和△EFC都是等边三角形,AD是△ABC的高,AB=4,若点E在直线AD上运动,连接DF,则在点E运动的过程中,线段DF的最小值是( )
![](https://img.xkw.com/dksih/QBM/2020/10/21/2575548794060800/2576711875428352/STEM/293dcd7d845942b8bc82588495747b81.png?resizew=139)
![](https://img.xkw.com/dksih/QBM/2020/10/21/2575548794060800/2576711875428352/STEM/293dcd7d845942b8bc82588495747b81.png?resizew=139)
A.1 | B.2 | C.![]() | D.![]() |
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【推荐2】已知
和
是等边三角形,
,且B、C、D三点共线,连接BE,AD,交AC于点M,交CE于点N,以下结论正确的个数是( )
①
;②
;③
;④连接CG,GC是
的角平分线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425328e5d875b3f45814c1323871ab8b.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75dfe7a0510168ecdc3fb99f1f41f173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff053cd2938259d8af50904e1edbe11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73cbd27d06065f2ddd5cf5ccbe5bef48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61123f663c231f0536d31dfa071375d6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/01d547b1-7249-4ec6-a815-994d03d4131c.png?resizew=271)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐1】如图,在正方形
中,
是等边三角形,
、
的延长线分别交
于点
、
,连接
,
,
与
相交于点
,给出下列结论:①
,②
,③
,④
,⑤
,其中正确的为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/783c4192-4c21-4d7f-b4fd-ff4f0bad5810.png?resizew=171)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d412bd974b908fe3135621f7ed15c6d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fce19faa541de8abc7361396c3d8925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7660372b5c91f11c494cf7322ea728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fec528dfaf3a73df5d64fa31270823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eac77e5a42731f745c754a58d1219c5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/783c4192-4c21-4d7f-b4fd-ff4f0bad5810.png?resizew=171)
A.①②③ | B.①②⑤ | C.②③④⑤ | D.①②④⑤ |
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【推荐2】如图,E、F分别是正方形ABCD的边BC、CD的中点,连接AF、DE交于点P,过B作BG∥DE交AD于G,BG与AF交于点M.对于下列结论:①AF⊥DE;②G是AD的中点;③∠GBP=∠BPE;④S△AGM:S△DEC=1:4.正确的个数是( )
![](https://img.xkw.com/dksih/QBM/2020/4/17/2443207169630208/2443940510408704/STEM/f4fed6647ab945d19e8c1afe338a1bab.png?resizew=131)
![](https://img.xkw.com/dksih/QBM/2020/4/17/2443207169630208/2443940510408704/STEM/f4fed6647ab945d19e8c1afe338a1bab.png?resizew=131)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐1】如图,正方形ABCD的对角线上的两个动点E、F,满足AB=
EF,点P是BC的中点,连接AF、PE,若AB=8,则当AF+PE最小值时,线段AF的长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
A.6 | B.![]() | C.2![]() | D.3![]() |
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【推荐2】如图,
的半径为4,点A,B在
上,点P在
内,
,
,如果
,那么
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/eab8bcf7-b668-40f4-ab5c-27802b3a3dc6.png?resizew=136)
A.![]() | B.3 | C.![]() | D.![]() |
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