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I wanted to find more polyhedra that looked like the uniform polyhedra. Norman Johnson had already enumerated all the convex regular-faced polyhedra, so I thought I'd consider the nonconvex ones. There are an infinite number of these, so some further rules are required to find the interesting ones. I considered these two additional rules:
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| Augmented Great Cubicuboctahedron | Augmented Dodecadodecahedron | Augmented Great Ditrigonal Dodecicosidodecahedron | Augmented Snub Dodecadodecahedron |
In the three icosahedral cases, the pentagons are augmented with pentagonal pyramids, in the other case the squares are augmented with square pyramids. Unfortunately, augmenting with cupolae failed to meet the conditions in all cases.
More interesting new polyhedra could surely be created by changing my rules slightly.
Since my initial investigation, Jim McNeill has taken this idea and run with it. He found many more polyhedra following these rules and variations on them. His results can be found at http://www.orchidpalms.com/polyhedra/uniform/augmented/augment.html.
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Copyright © 2001-2008, Robert Webb.