The Octahemioctahedron, and Three Views of Its First Stellation | RobertLovesPi.net

This is the octahemioctahedron, which is one of the uniform polyhedra. It has twelve faces: eight equilateral triangles, and four regular hexagons. The hexagons pass through the center of this polyhedron. Here's the first stellation of this polyhedron, colored by face type. Here's a second..