如图,在正方形ABCD中,点E、F、G分别是AD、DC、BC的中点,AF与DG交于点O,连接OE、OB.下列结论:①AF⊥DG;②BC=2OE;③AB=BO;④∠AOB=∠DGC;⑤∠OED=∠ABO.其中正确的结论有________ .(请填写序号)
![](https://img.xkw.com/dksih/QBM/2021/7/23/2770471309172736/2781846932291584/STEM/2d2fbaceda1f4cb6ab24778b6541eed3.png?resizew=149)
更新时间:2021-08-16 14:58:31
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【推荐1】如图,在正方形
中,
是
边上一点,连接
,点
为
的中点,过点
作
的垂线分别交
、
于点
、
,连接
交
于点
,若
,
,则
的长为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afd29ea205c6d18c468441688e8419c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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【推荐2】如图,点
为
内部的一点,连接
、
、
,
,
,且
,若
,
,则线段
的长为__________ .
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【推荐1】
中,
,
,
,折叠
,使点
落在
边上的点
处,折痕
交
于点
,当点
由
向
连续移动过程中,点
经过的路径长记为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a974750a97ff0cb67d19e845b24a929.png)
________ .
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【推荐2】如图,在正方形
中,点
是边
上一点,连接
,点
为
的中点,过点
作
,分别与
,
相交于点
,
.连接
分别与
,
相交于点
,
,连接
,若
,
,则线段
的长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
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【推荐1】如图,在
中,
,
为
中点,将
沿
边翻折,得到
,
与
相交于点
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e80bb0f244f283cd4c3faf809ba488d.png)
____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4908fad3dc6fe1b0675c870328f043ef.png)
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【推荐2】如图,在等腰直角
中,
,点E是
边上一点,点D是
边上的中点,连接
,过点E作
,满足
,连接
,交
于点M,将
沿
翻折,得到
,连接
,交
于点P,若
,则
的长度是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360496a4f5cc8a5faca5e089ae4f9531.png)
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【推荐1】如图,在正方形
中,点E在
上,
,连接
,取
中点F,过F作
且使得
,连接
并延长,将
绕点C旋转到
,当
,
,
三点共线且
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743a403a0c155710d16d70561ff88c17.png)
______ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be890a399a6eb60745924892864b700f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81722445de00f3cfcc3cb97e45b0d8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e261ffa0ddfbb93bb73bf0dabe23148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743a403a0c155710d16d70561ff88c17.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/01a3e14b-3cb4-47ae-8bf0-6c3a975e23cb.png?resizew=199)
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【推荐2】圆O的半径为
,点M的坐标为(m,3),若在圆O上存在一点N, 以M、N为正方形的两个顶点,且正方形的边均与两条坐标轴垂直,则m的最小值为_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
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