BG-MO 1971 Problem 3
There are given points in the plane, no three of which lie on a single line. Prove that there exist at least quadrilaterals with vertices from the given points.
Dataset text AI-MO AoPS. Quoted with source.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.
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