Problem 6
Source: 21-st Iberoamerican Mathematical Olympiad
May 6, 2007
functionalgebradomaininductiongeometryperpendicular bisectorstrong induction
Problem Statement
Consider a regular -gon with odd. Given two adjacent vertices and define the sequence of vertices of the -gon as follows: For is the vertex lying on the perpendicular bisector of Find all for which each vertex of the -gon occurs in this sequence.