MathDB
m points in hexagon

Source: Macedonian JBMO TST 2013

May 26, 2013
geometrycombinatorics proposedcombinatorics

Problem Statement

A regular hexagon with side length 1 1 is given. There are m m points in its interior such that no 3 3 are collinear. The hexagon is divided into triangles (triangulated), such that every point of the m m 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 334(m+2) \frac{3 \sqrt{3}}{4(m+2)}.