Acute-angled or obtuse-angled triangles in regular 2008-gon
Source: Sharygin contest. The final raund. 2008. Grade 8. Second day. Problem 6
August 31, 2008
geometry unsolvedgeometry
Problem Statement
(B.Frenkin) Consider the triangles such that all their vertices are vertices of a given regular 2008-gon. What triangles are more numerous among them: acute-angled or obtuse-angled?