non-convex hexagon with each angle is either 90 or 270, cut into hexagons
Source: Sharygin 2006 finals 9.4
September 12, 2019
hexagoncutgeometryangles
Problem Statement
In a non-convex hexagon, each angle is either or degrees. Is it true that for some lengths of the sides it can be cut into two hexagons similar to it and unequal to each other?