ASU 514 All Soviet Union MO 1990 rectangle disect 15 congruent polygons
Source:
August 14, 2019
Tilingcongruentrectanglesquarecombinatorial geometrygeometry
Problem Statement
Does there exist a rectangle which can be dissected into congruent polygons which are not rectangles? Can a square be dissected into congruent polygons which are not rectangles?