Pyramid Glued to Tetrahedron
Source: 1988 IrMO Paper 1 Problem 1
September 28, 2017
geometry3D geometrypyramidtetrahedron
Problem Statement
A pyramid with a square base, and all its edges of length , is joined to a regular tetrahedron, whose edges are also of length , by gluing together two of the triangular faces. Find the sum of the lengths of the edges of the resulting solid.