Decagonal prism

In geometry, the decagonal prism is the eighth in the infinite set of prisms, formed by ten square side faces and two regular decagon caps. With twelve faces, it is one of many nonregular dodecahedra. The decagonal prism has 12 faces, 30 edges, and 20 vertices, so, it is a dodecahedron (while the term is usually applied to regular dodecahedron or rhombic dodecahedron.). If faces are all regular, it is a semiregular or prismatic uniform polyhedron.

Uniform decagonal prism
Type	Prismatic uniform polyhedron
Elements	F = 12, E = 30, V = 20 (χ = 2)
Faces by sides	10{4}+2{10}
Schläfli symbol	t{2,10} or {10}×{}
Wythoff symbol	2 10 | 2 2 2 5 |
Coxeter diagrams
Symmetry	D10h, [10,2], (*10.2.2), order 40
Rotation group	D10, [10,2]+, (10.2.2), order 20
References	U76(h)
Dual	Decagonal dipyramid
Properties	convex, zonohedron
Vertex figure 4.4.10