Elongated dodecahedron

Elongated dodecahedron
Type	Parallelohedron
Faces	8 rhombi 4 hexagons
Edges	28
Vertices	18
Vertex configuration	(8) 4.6.6 (8) 4.4.6 (2) 4.4.4.4
Symmetry group	Dihedral (D4h), [4,2], (*422), order 16
Rotation group	D4, [4,2]+, (422), order 8
Properties	Convex
Net

In geometry, the elongated dodecahedron,^[1] extended rhombic dodecahedron, rhombo-hexagonal dodecahedron^[2] or hexarhombic dodecahedron^[3] is a convex dodecahedron with 8 rhombic and 4 hexagonal faces. The hexagons can be made equilateral, or regular depending on the shape of the rhombi. It can be seen as constructed from a rhombic dodecahedron elongated by a square prism.