MMO 038 Moscow MO 1938 equidistant planes from 4 points
Source:
July 18, 2019
equidistantplanes3D geometrycombinatorial geometrygeometry
Problem Statement
In space points are given. How many planes equidistant from these points are there? Consider separately
(a) the generic case (the points given do not lie on a single plane) and
(b) the degenerate cases.