1980 Canadian MO Problems/Problem 5
Revision as of 12:28, 2 March 2020 by Ellentilburg (talk | contribs) (Created page with "== Problem == A parallelepiped has the property that all cross sections, which are parallel to any fixed face <math>F</math>, have the same perimeter as <math>F</math>. Dete...")
Problem
A parallelepiped has the property that all cross sections, which are parallel to any fixed face 
, have the same perimeter as . Determine whether or not any other poyhedron has this property
