Great triakis octahedron
Introduction 3D model of a great triakis octahedronIn geometry, the '''great triakis octahedron''' is the dual of the stellated truncated hexahedron (U19). It has 24 intersecting isosceles triangle faces. Part of each triangle lies within the solid, hence is invisible in solid models.
Proportions The triangles have one angle of  and two of . The dihedral angle equals .
References *
External links * Mathworld - Great Triakis Octahedron* Mathworld - Small Triakis Octahedron*  Uniform polyhedra and duals