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This special concave polyhedron was named after a Hungarian mathematician.
Szilassi polyhedron, polyhedrons, face, vertex, edge, neighbouring faces, solids, geometry, mathematics
This special solid was invented by Hungarian mathematician Lajos Szilassi.
It is a polyhedron, i.e. it only consists of polyhedral faces.
Its distinctive feature is that, - according to current knowledge, - with the exception of the tetrahedron, it is the only polyhedron whose any two faces are adjacent, i.e. they share a common vertex.
Number of faces: 7 (hexagonal)Number of vertices: 14Number of edges: 21
It is not convex. (A convex polyhedron is a polyhedron whose every point lies in one of the half-spaces determined by the plane of each of its faces.)
It is not simple. It is the dual polyhedron of the Császár polyhedron.
The Császár polyhedron is a nonconvex polyhedron with 14 triangular faces.
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