如图,在
中,
,
的平分线相交于点E,
边的垂直平分线相交于点D.若
,则
的度数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94768c4b076fabb1ef1d5c318f019e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ee8de2d272e8a3cad423ef206cd7eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/01df4225-73b8-43da-b079-18896f9a6fd9.png?resizew=186)
更新时间:2024-03-19 23:36:52
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【推荐1】如图,AB∥CD,
的平分线
和
的平分线
的反向延长交于点E,且
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【推荐1】如图,∠BAC=105°,若MP、NQ分别垂直平分AB、AC,则∠PAQ=________ .
![](https://img.xkw.com/dksih/QBM/2018/1/2/1851775972892672/1858304936124416/STEM/6269e80a2c4a48bc8284d42d5d7ab057.png?resizew=252)
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【推荐2】如图,在长方形
中,
,点E是射线
上的一个动点,把
沿
折叠,点C的对应点为F.若点F刚好落在线段
的垂直平分线上时,则线段![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5277fa450a0c513a86a74420f8ee99f6.png)
_______ .
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【推荐1】如图,
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,
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边上一点,将
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恰好落在
边上的点
处,再将
沿
翻折,点
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![](https://img.xkw.com/dksih/QBM/2022/12/3/3123067767185408/3127919438905344/STEM/031a97b99d2f4e3da47d273af9bbe86a.png?resizew=216)
①若
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到
的距离是_________ ;
②若
的度数为
,
的度数
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=___________ .
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①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a7e67119e174196363533911ced464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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②若
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【推荐2】如图.在Rt△ABC中,∠A=90°,AC=4.按以下步骤作图:(1)以点B为圆心,适当长为半径画弧,分别交线段BA,BC于点M,N;(2)以点C为圆心,BM长为半径画弧,交线段CB于点D;(3)以点D为圆心,MN长为半径画弧,与第2步中所面的弧相交于点E;(4)过点E画射线CE,与AB相交于点F.当AF=3时,BC的长是_______________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/8fe4821f-e605-417e-9963-ca2cf8e0307e.png?resizew=131)
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