将每一个内角都是
的五边形按如图所示方式放置,若直线
,则下列结论中一定正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/4/9/2696374453772288/2696716023209984/STEM/005e9add-c970-4a64-b435-f6e1b6e3a4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ce270dc393605896e5b9d5f5ebebd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
![](https://img.xkw.com/dksih/QBM/2021/4/9/2696374453772288/2696716023209984/STEM/005e9add-c970-4a64-b435-f6e1b6e3a4dd.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
20-21七年级下·浙江杭州·阶段练习 查看更多[4]
更新时间:2021-04-10 11:05:42
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【推荐2】如图,
,以A为圆心,任意长为半径画弧,分别交
于点M,N,再分别以M,N为圆心,大于
长为半径画弧,两弧相交于点P,画射线
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于点E.若
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,
,
,
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/26/a07a0538-7337-4d0c-b0a1-13316e5dee10.png?resizew=173)
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A.81° | B.59° | C.91° | D.70° |
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【推荐2】如图,AB∥CD,DB⊥BC,∠1=30°,则∠2的度数是( )
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【推荐1】2022年的足球“世界杯”在卡塔尔举行,足球上面的图形是我们所学的正五边形和正六边形组成的,下面说法错误的是( )
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B.正五边形的对角线总条数为5条,正六边形为9条 |
C.正六边形的内角和为![]() |
D.正五边形和正六边形都是轴对称图形 |
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【推荐2】正多边形的一个内角为
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A.5 | B.6 | C.7 | D.8 |
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