MathDB
Angles of triangles are integers

Source: Kvant Magazine No. 3 2022 M2691

March 8, 2023
geometryKvantcombinatorial geometry

Problem Statement

There are NN{} points marked on the plane. Any three of them form a triangle, the values of the angles of which in are expressed in natural numbers (in degrees). What is the maximum NN{} for which this is possible?
Proposed by E. Bakaev