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|Faces||2 pentagons, 4 squares, 2+4+4 triangles|
|Abstract & topological properties|
|Symmetry||K2×I, order 4|
The prize substistute or A5''m-2 is a non-convex polyhedron with regular faces. It is an example of a 5-4-3 acrohedron. It can be made by excavating two ms from A5''. It has the fewest faces of any polyhedron in the cult of the double-ess-five.