Szilassi polyhedron

Szilassi polyhedron
TypeToroidal polyhedron
Faces7 hexagons
Edges21
Vertices14
Euler char.0 (Genus 1)
Vertex configuration6.6.6
Symmetry groupC1, [ ]+, (11)
Dual polyhedronCsászár polyhedron
PropertiesNon-convex

In geometry, the Szilassi polyhedron is a nonconvex polyhedron, topologically a torus, with seven hexagonal faces.