如图,点E、F分别为正方形ABCD的便BC、CD上的动点,连接AE、AF分别交正方形对角线BD于点H、G,满足∠EAF=45°,下列四个结论:①BE+DF=EF;②
;③△AEG是等腰直角三角形;④
.其中正确的结论有____ (写出所有正确结论的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5f62a7771481996f21f9ec33813339.png)
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更新时间:2021-01-10 16:26:01
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【推荐1】如图,一个由8个正方形组成的“
”型模板恰好完全放入一个矩形框内,模板四周的直角顶点
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,
,
,
都在矩形
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的长为__________ .
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【推荐2】如图,在正方形
的对角线
上取一点
,使得
,连接
并延长
到
,使
与
相交于点
,若
,有下列四个结论:①
;②
;③
;④
.则其中正确的结论有_____________ .(填序号)
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【推荐1】如图,正方形ABCD边长为
,△BCD绕B顺时针旋转至△BFE,点C与点F对应,点D与点E对应,连接AE,交BD于点P,当P是AE的中点时,△AEB的面积为___ .
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【推荐2】如图,正方形
的边长为4,对角线
相交于点O,将
绕着点B顺时针旋转
得到
,点A,D的对应点是点E,F,
交
于点G,连接
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于点H,连接
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【推荐1】如图,正方形ABCD中,AB=4,点E是BC上靠近点B的四等分点,点F是CD的中点,连接AE、BF将
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【推荐2】如图,边长是2的正方形
的顶点A,C分别在x轴和y轴的正半轴上,点E是
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【推荐1】在边长为
的正方形
中,点
是
上两点,且
,
,
交对角线
于
,交
于点
,连接
.则四边形
的面积为___________ .
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【推荐2】如图,
中,
,延长
到点D,使
,点O是
边上一动点.点P在射线
上,且
,以点O为圆心,
长为半径作
,连接
.
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(1)当
长为________ 时,
与
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恰好经过点B时,点Q在
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的中点,连接
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长的取值范围是________ .
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(1)当
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(2)当
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