如图,四边形ABCD是边长为1的正方形,E,F为BD所在直线上的两点,若AE=
,∠EAF=135°,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2019/6/14/2225311760703488/2227524939022336/STEM/ebc9916c82da4f3c915ab0178bfc9626.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec9b41fb5bc2e74561e83e8b4245446.png)
![](https://img.xkw.com/dksih/QBM/2019/6/14/2225311760703488/2227524939022336/STEM/ebc9916c82da4f3c915ab0178bfc9626.png?resizew=161)
A.![]() | B.![]() | C.![]() | D.四边形AFCE的面积为![]() |
更新时间:2019-06-17 17:11:56
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【推荐1】如图,在正方形ABCD中,AB=6,点H在DC的延长线上,连接AH交BC于点F,点E在BF上,且AE平分∠BAH,若CH=BE,则EH等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/c2706404-2e73-4bd0-9420-02a9841e8a14.png?resizew=125)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/c2706404-2e73-4bd0-9420-02a9841e8a14.png?resizew=125)
A.![]() | B.2![]() | C.3![]() | D.6-![]() |
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【推荐2】如图,在正方形
中,点
在对角线
上,过点
作
且
,连接
,点
是
的中点,连接
、
.若
,则
一定等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4845c0e29c1659ec848af8d7e96be98.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,已知
,
,小丽用尺规进行了作图,小芳根据小丽的作图痕迹得出以下结论:①
; ②
是等腰三角形; ③
是等边三角形; ④
;⑤点
是
的外心. 其中正确的是
![](https://img.xkw.com/dksih/QBM/2019/6/25/2233112236498944/2233453606297600/STEM/efdad303c3be454dadbfaf3b9d07aba3.png?resizew=144)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8149e6cd3d2f2304af7a8527002a6bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c95041b330e57f81c425a3b4f458fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2019/6/25/2233112236498944/2233453606297600/STEM/efdad303c3be454dadbfaf3b9d07aba3.png?resizew=144)
A.①②⑤ | B.②③④ | C.②④⑤ | D.③④⑤ |
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【推荐2】如图,已知点D、E分别在
的边
、
上,
,
,那么
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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