This argument can be generalized to show that any three angle measures that sum to 180 degrees can make a triangle, and one immediate consequence is that it’s easy to find triangles whose angle ...

The question of identifying all tetrahedra with rational dihedral angles — rational tetrahedra — was first formally stated in a 1976 paper by John Conway and Antonia J. Jones. The two were motivated ...

Let P be a locally finite disk pattern on the complex plane C whose combinatorics are described by the one-skeleton G of a triangulation of the open topological disk and whose dihedral angles are ...