m points in hexagon
Source: Macedonian JBMO TST 2013
May 26, 2013
geometrycombinatorics proposedcombinatorics
Problem Statement
A regular hexagon with side length is given. There are points in its interior such that no are collinear. The hexagon is divided into triangles (triangulated), such that every point of the given and every vertex of the hexagon is a vertex of such a triangle. The triangles don't have common interior points. Prove that there exists a triangle with area not greater than .