如图,已知
平分
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa0f4484f901bb727fbeae1a044d714.png)
________
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfc2771aa0d5b97d2297f8a26a6f6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c8077206261a00c97b34b73bfa1b242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa0f4484f901bb727fbeae1a044d714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
更新时间:2024-04-19 09:18:22
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【推荐1】如图,矩形
中,
、
交于点O,
平分
交
于E,
,连接
.下列结论:①
是等边三角形;②
;③
;④
.其中正确的有___________ (填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
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【推荐2】如图,直线
、
相交于点
,
平分
,
,
与
的度数之比为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357d66fa486159867b5c4197f7753379.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75a7b0ab537e7e786f25cb8d6888293.png)
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【推荐1】如图,下列条件:①∠1=∠2;②∠BAD+∠ADC=180°;③∠ABC=∠ADC;④∠3=∠4;其中能判定AB∥CD的是_____ (填序号).
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【推荐2】将一块三角板ABC(∠BAC=90°,∠ABC=30°)按如图方式放置,使A,B两点分别落在直线m,n上,对于给出的五个条件:①∠1=25.5°,∠2=55°
;②∠1+∠2=90°;③∠2=2∠1;④∠ACB=∠1+∠3;⑤∠ABC=∠2-∠1.能判断直线m
n的有__ .(填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54a8385013665bebb6da1f7ad8c3232.png)
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【推荐1】如图所示.AE∥BD,∠1=3∠2,∠2=20°,则∠C=__________ .
![](https://img.xkw.com/dksih/QBM/2020/7/9/2502263238696960/2503798053142528/STEM/a75a594f-400e-4082-aa5d-c2f83bc9eeb4.png?resizew=201)
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解题方法
【推荐2】如图,△ABC的外角∠ACD的平分线CP与内角∠ABC平分线BP交于点P,若∠BPC=36°,则∠CAP=______ .
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