MathDB
Parallelogram in hexagon

Source: Austrian-Polish 1978, Problem 2

July 5, 2015
geometryparallelogramsymmetry

Problem Statement

A parallelogram is inscribed into a regular hexagon so that the centers of symmetry of both figures coincide. Prove that the area of the parallelogram does not exceed 2/32/3 the area of the hexagon.