TOT 450 1995 Spring A J6 6 parallelepipeds in space
Source:
July 9, 2024
geometrycombinatorial geometrycombinatorics
Problem Statement
Can it happen that parallelepipeds, no two of which have common points, are placed in space so that there is a point outside of them from which no vertex of a parallelepiped is visible? (The parallelepipeds are not transparent.) (V Proizvolov)