如图,BD平分∠ABC,DE∥BC,则图中相等的角共有( ) .
![](https://img.xkw.com/dksih/QBM/2019/2/3/2132782769209344/2137155020767232/STEM/b1b0efc063974a0aacad35eca63d8e50.png?resizew=81)
![](https://img.xkw.com/dksih/QBM/2019/2/3/2132782769209344/2137155020767232/STEM/b1b0efc063974a0aacad35eca63d8e50.png?resizew=81)
A.2对 | B.3对 | C.4对 | D.5对 |
更新时间:2019-02-08 18:35:28
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【知识点】 根据平行线的性质探究角的关系解读
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【推荐1】①如图1,AB
CD,则∠A +∠E +∠C=180°;②如图2,AB
CD,则∠E =∠A +∠C;③如图3,AB
CD,则∠A +∠E-∠1=180° ; ④如图4,AB
CD,则∠A=∠C +∠P.以上结论正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】在直角三角形
中,
,
平分
交
于点
,
平分
交
于点
,
、
相交于点
,过点
作
平行
,过点
作
交
于点
.下列结论:①
;②
;③
平分
;④
.其中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/2021/6/10/2739955547545600/2740220426674176/STEM/330b74c6-f40d-4e8f-881a-3fab8ecb3eee.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://img.xkw.com/dksih/QBM/2021/6/10/2739955547545600/2740220426674176/STEM/330b74c6-f40d-4e8f-881a-3fab8ecb3eee.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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