2 cross-sections of tetrahedron by 2 different cutting planes are 2 squares,
Source: Tournament of Towns, Senior A-Level Paper, Spring 2020 , p3
June 3, 2020
3D geometryplanesgeometrysquare
Problem Statement
Is it possible that two cross-sections of a tetrahedron by two different cutting planes are two squares, one with a side of length no greater than and another with a side of length at least ?Mikhail Evdokimov