Decagons Sentence Examples

The truncated dodecahedron is formed by truncating the vertices of a dodecahedron parallel to the faces of the coaxial icosahedron so as to leave the former decagons.

In the " great rhombicosidodecahedron " the dodecahedral faces are decagons, the icosahedral hexagons and the triacontahedral squares; this solid is sometimes called the " truncated icosidodecahedron."

It is enclosed by 20 triangular faces belonging to the icosahedron and 12 decagons belonging to the dodecahedron.