如图,在
中,
平分
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
_____________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6962379563870aada260adede499fb46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/fcb5975d-d926-4d80-8da1-1f64c9f8ad25.png?resizew=167)
22-23八年级上·北京朝阳·期末 查看更多[2]
更新时间:2022-12-28 23:07:16
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【推荐1】如图.
.直线
交
于点E,交
于点F,
平分
,交
于点G,
,则
等于________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
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【推荐2】如图,直线AB、CD相交于点O,OA平分∠EOC,∠EOC=76°,则∠BOD=______ .
![](https://img.xkw.com/dksih/QBM/2020/5/26/2471009615339520/2471196950634496/STEM/1840a0da3cef429587cc2bb41cc54c8d.png?resizew=136)
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【推荐2】如图,已知
绕点B按逆时针方向旋转得到
,
,
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,则
的度数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】三角形三个内角的度数之比是1:2:3,它的最大边长是6cm,则它最短边长为________ .
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【推荐1】1.如图,在
中,
,以点
为圆心,
为半径的圆交
于点
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千点
.若
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的度数为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a80d4477c5fa6dc0a2f61003cf060a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f11cd98a1aa440491c95af505b2a9e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
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【推荐2】如图,已知∠AOB=80°,在射线OA、OB上分别取OA= OB1,连结AB1,在AB1、B1B上分别取点A1、B2,使A1 B1= B1 B2 ,连结A1 B2 …,按此规律下去,记∠A1 B1 B2=θ1 ,∠A2B2B3 =θ2, …,∠AnBnBn+1 =θn ,则θ2=__________ ;θ2013=________________ .
![](https://img.xkw.com/dksih/QBM/2013/3/25/1573623690878976/1573623710056448/STEM/aae4c6b63f714bf3941f001cd62242fd.png?resizew=312)
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