如图,图中有四条互相不平行的直线
、
、
、
所截出的七个角,关于这七个角的度数关系,下列选项正确的是( )
![](https://img.xkw.com/dksih/QBM/2018/7/3/1980696734064640/1982016722067457/STEM/cdc94b2f1b03494f803c5b1590c3a413.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f93f4e10d9672fa6bd67243bc23d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0f7eb99327cfa0971249c216f4fb207.png)
![](https://img.xkw.com/dksih/QBM/2018/7/3/1980696734064640/1982016722067457/STEM/cdc94b2f1b03494f803c5b1590c3a413.png?resizew=162)
A.∠2=∠4+∠5 | B.∠3=∠1+∠6 | C.∠1+∠4+∠7=180° | D.∠5=∠1+∠4 |
更新时间:2018-07-18 18:08:29
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【推荐1】如图,在等腰
中,
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上的点,
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/1e238bfc-d5d5-4380-a7da-123798759265.png?resizew=99)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在
中,
,垂足为
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为
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的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,已知△ABC中DE∥BC,CD是∠ACB的平分线,其中∠AED=50°,则∠EDC的度数是( )
![](https://img.xkw.com/dksih/QBM/2015/10/16/1573920226615296/1573920232710144/STEM/f7546bb4e1cd4025906d1b2f73ccf666.png)
![](https://img.xkw.com/dksih/QBM/2015/10/16/1573920226615296/1573920232710144/STEM/f7546bb4e1cd4025906d1b2f73ccf666.png)
A.10° | B.20° | C.25° | D.3° |
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【推荐2】如图,AB⊥AC,CD、BE分别是△ABC的角平分线,AG∥BC,AG⊥BG,下列结论:①∠BAG=2∠ABF;②BA平分∠CBG;③∠ABG=∠ACB;④∠CFB=135°.其中正确的结论是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/7/950471b4-073d-4e69-a3c5-7fddd4e4f7d1.jpg?resizew=145)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/7/950471b4-073d-4e69-a3c5-7fddd4e4f7d1.jpg?resizew=145)
A.![]() | B.![]() | C.![]() | D.![]() |
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