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如何用尺规法画线段三等分点
更新时间: 2020-07-01 00:00:00  

用尺规法画线段三等分点的步骤:

先画出线段,在一个顶点处画一条跟原线段相交的直线。在直线上另作一条线段与原线段平行,一个顶点在直线上,两条线段要在直线的同一面,线段长度为3a,a可根据实际情况而定。将两条线段另外两个顶点相连并记此线段为线段L,过第二条线段的两个三等分点作两条直线均与L平行,则与原线段的交点就是原线段的三等分点。

关键词: 何用 线段 等分

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