Combi geometry in Sharygin's olympiad 2024
Source: 9.4 of XX Geometrical Olympiad in honour of I.F.Sharygin
August 6, 2024
Combi Geogeogeometry
Problem Statement
For which it is possible to mark several different points and several different circles on the plane in such a way that:
— exactly marked circles pass through each marked point;
— exactly marked points lie on each marked circle;
— the center of each marked circle is marked?