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尺规作图怎样将线段三等分

2025-02-28 00:53:53

推荐回答（5个）

回答1：

沿那线段（AB）A点做一不平行AB的射线
取三等分AC=CD=DE
连接BE
过C D做BE的平行线CF DG交AB与F G
则 AF=FG=GB
F G是三等分点

回答2：

哈哈，就是那样作，很简单，方便

回答3：

“尺规三等分线段”是尺规作图不能问题之一，所以是行不通的。

回答4：

过线段ab一端点做射线ao，依次截取三段等长线段am
mn
nl，连接lb
过m
n做平行与lb直线交ab与
x
y

回答5：

用平行线分线段成比例定理

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