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如何做圆的内接正五边形

更新时间: 2020-10-13 00:00:00     

做圆的内接正五边形的步骤:

1、用圆规画出一个圆O;

2、作出圆O的水平平分线和垂直平分线;

3、找出ON的中点M,用圆规以M为圆心,AM为半径画弧交水平平分线于点H;

4、用圆规以A为圆心,AH为半径画弧,交圆周长于点B点E;

5、以AB的长度为边长即可作出圆内切正五边形。

关键词: 如何 五边形

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