MathDB
Nesting polygons

Source: Canada Repêchage 2018/2

April 9, 2018
geometrygeometric transformationrotationreflection

Problem Statement

We call a pair of polygons, pp and qq, nesting if we can draw one inside the other, possibly after rotation and/or reflection; otherwise we call them non-nesting.
Let pp and qq be polygons. Prove that if we can find a polygon rr, which is similar to qq, such that rr and pp are non-nesting if and only if pp and qq are not similar.