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Besides the regular and semiregular solids, there are just ninety-two other convex polyhedra with regular faces. In 1966, the American mathematician Norman W. Johnson, a student of H.S.M. Coxeter at ...

A polygon is regular if it is uniform and its faces are all alike. The regular convex polyhedra are the five Platonic solids, which have been known since classical Greece. The ancient Greek ...

Follow our instructions to find out how to fold a very easy origami jumping frog and discover some of the colourful species you could decorate your paper amphibian to look like. You very likely have ...

Prior to joining Smith in 1988 to found and chair the computer science department, Joseph O’Rourke was an assistant and then associate professor at Johns Hopkins University. His research is in the ...

The team highlights that modular origami metastructures, which need intricate actuation systems yet allow higher mobility due ...

A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles ...