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A tridecahedron is a polyhedron with 13 faces. There are numerous topologically distinct forms of a tridecahedron, for example the dodecagonal pyramid and hendecagonal prism.


There are 96,262,938 topologically distinct convex tridecahedra, excluding mirror images, having at least 9 vertices.[1] (Two polyhedra are "topologically distinct" if they have intrinsically different arrangements of faces and vertices, such that it is impossible to distort one into the other simply by changing the lengths of edges or the angles between edges or faces.)


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