Represents a combination of a pentagonal dodecahedron and cube, and are common in pyrites.

Represents the combination of pentagonal dodecahedron, cube, and octahedron.

Represents the combination of pentagonal dodcahedron, dyakis-dodecahedron and octahedron.

"...shows the rhombic dodecahedron in combination with the octahedron." -The Encyclopedia Britannica…

A combination of a tetrahedron and a rhombic dodecahedron.

"A combination of cube, dodecahedron, and tetrahedron." — Ford, 1912

"This is the hemihedral form of the triakis-octahedron; it has the indices {hhk} and is bounded by tweleve…

"The faces of the deltoid dodecahedron correspond to one-half those of the trisoctahedron." —…

A regular solid each face of which has the same boundaries as five covertical faces of an ordinary icosahedron.

Pattern that can be cut out and folded to construct a regular dodecahedron. Fold on the dotted lines,…

A solid consisting of 12 similiar faces, each of which is rhomb, the angle between any two adjacent…

A regular solid each face of which formed by stellating a face of the dodecahedron.

"A combination of of dodecahedron, trapezohedron, and hexoctahedron." — Ford, 1912

A regular dyocaetriacontahedron formed by cutting off the faces of a regular dodecahedron parallel to…

"This is the hemihedral form of the hexakis-octahedron and has the indicies {hkl}; it is bounded by…

Illustration showing the combination of a hexahedron and an dodecahedron.

Illustration showing the combination of a octahedron and an dodecahedron.

"This is bounded by twelve pentagonal faces, but these are not regular pentagons, and the angles over…

"At the freezing point [phosphorus] hardens, becomes brittle, and shows, on being broken, evidences…

Illustration of regular polyhedrons: tetrahedron, hexahedron, octahedron, dodecahedron, icosahedron.

"Science has succeeded in classifying the thousands of known crystals in six systems, to each of which…

"Bounded by twelve rhomb-shaped faces parallel to the six dodecahedral planes of symetry. the angles…

Illustration containing a tetrahedron, hexahedron, octahedron, dodecahedron, and icosahedron, placed…

"This is bounded by twelve irregular pentagons, and is a tetartohedral or quarter-faced for of the hexakis-octahedron."…