Dyakis dodecahedron information

Dyakis dodecahedron
(rotating and 3D model)
Type	Non-uniform
Face polygon	Chiral quadrilateral with 2 unequal acute angles & 2 unequal obtuse angles
Faces	24, congruent
Edges	48
Vertices	26
Face configuration	V3.4.4.4
Symmetry group	Pyritohedral
Dual polyhedron	Cantic snub octahedron
Properties	convex, face-transitive
Net

In geometry, the dyakis dodecahedron /ˈdʌɪəkɪsˌdəʊdɪkəˈhiːdrən/^[1] or diploid is a variant of the deltoidal icositetrahedron with pyritohedral symmetry, transforming the kite faces into chiral quadrilaterals. It is the dual of the cantic snub octahedron. It can be constructed by enlarging 24 of the 48 faces of the disdyakis dodecahedron, and is inscribed in the dyakis dodecahedron,^[2] thus it exists as a hemihedral form of it with indices {hkl}.^[3] It can be constructed into two non regular pentagonal dodecahedra, the pyritohedron and the tetartoid. The transformation to the pyritohedron can be made by combining two adjacent trapezoids that share a long edge together into one hexagon face, which is a pyritohedral pentagon with an extra vertex added. The edges that bend at it can be combined and the vertex removed to finally get the pentagon. The transformation to the tetartoid can be made by enlarging 12 of the dyakis dodecahedron's 24 faces.

Since the quadrilaterals are chiral and non-regular, the dyakis dodecahedron is a non-uniform polyhedron, a type of polyhedron that isn't vertex transitive and doesn't have regular polygon faces. Since it is face-transitive, it is an isohedron.^[4] The name diploid derives from the Greek word διπλάσιος (diplásios), meaning twofold since it has 2-fold symmetry along its 6 octahedral vertices. It has the same number of faces, edges and vertices as the deltoidal icositetrahedron as they are topologically identical.