Bundeswettbewerb Mathematik 1974 Problem 1.4
Source: Bundeswettbewerb Mathematik 1974 Round 1
October 16, 2022
polygoncombinatoricscycles
Problem Statement
All diagonals of a convex polygon are drawn. Prove that its sides and diagonals can be assigned arrows in such a way that no round trip along sides and diagonals is possible.