A decahedron is a closed 3-D shape with ten polygonal faces. There are 32,300 topologically different decahdra and, since none of these are regular, the term is ambiguous. Some simple decahedra are:
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In geometry, a decahedron is a polyhedron with ten faces. There are 32300 topologically distinct decahedra and none are regular, so this name is ambiguous.One regular decahedron is an octagonal prism. Along with its 10 faces, it has 16 vertices and 24 edges.
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A decahedron has no cornets.
A decahedron has ten faces.
There is no such object. A decahedron is a 3-d object with 10 faces whereas a dodecahedron is a 3-d object with 12 faces. Each of them can have different numbers of edges.