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如何画正五边形步骤

更新时间: 2020-09-16 00:00:00     

1、先用 圆规量出量角器中心点到量角器的一点的距离,也就是零度为一点一百八十度为二点,定好圆规画一圆;

2、量角器的中心必须与所画的圆的圆心重叠,必须对正,标出点一 然后量出七十二度,标示点二,一百四十四度标示点三;

3、重复第二条在三点量出七十二度标示点四,一百四十四度标示点五。

关键词: 如何 五边形 步骤

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