Trisect

From AoPSWiki

To trisect is to divide into three equal parts. The term is used most frequently in geometry, where one may speak of the points that trisect a line segment or rays that trisect an angle. The problem of the construction of the angle trisector (analogous to angle bisector) with straight edge and compass is one of the famous three Greek problems of antiquity.

This article is a stub. Help us out by expanding it.