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如何用尺规画中线

更新时间: 2020-09-16 00:00:00     

1、随意的一条线,拿出圆规以这条线的其中一个端点为圆的中心,圆的的半径是这条线的2/3左右,适当的可画一段弧;

2、在另一个端点按照同样的方法做出另一段弧;

3、两个弧的交点垂直的画条直线,这条直线即是所求的中线。

关键词: 何用 中线

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