n points, circle passing through 3 points and have not n-3 interior ones
Source: 1997 Estonia National Olympiad Final Round grade 11 p4
March 11, 2020
circlescombinatoricscombinatorial geometry
Problem Statement
Let be given distinct points in the plane. Is it always possible to find a circle which passes through three of the points and contains none of the remaining points
(a) inside the circle.
(b) inside the circle or on its boundary?