如何用无刻度的尺规作出角三等分线和线段的三等分点?角n等分线和线段n等分点�?原理是什么? 知乎 Template




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tomski如何用无刻度的尺规作出角三等分线和线段的三等分点?角n等分线和线段n等分点�?原理是什么? 知乎 coloring