MathDB

1

Part of 1987 Greece Junior Math Olympiad

Problems(1)

2 colors for all points of plane - Greece Juniors 1987 p1

Source:

9/13/2024
We color all the points of the plane with two colors. Prove that there are (at least) two points of the plane having the same color and at distance 11 among them.
geometrycombinatoricscombinatorial geometryColoring