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Crossed Pentagonal Cuploid
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The model presented here is a *5/4* cuploid. It's upside-down in this
photo with respect to the description above (the *5/4*-gon is at the
bottom instead of the top). A *5/4*-gon is a *retrograde* pentagon,
ie a normal pentagon, but we visit the vertices in the opposite order. The
base would be a *10/4*-gon, which is two coincident *5/2*-gons.
These coincident base pentagrams have been removed as described above, but you
can see the outline still there, now with triangles meeting squares at these
edges instead.

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Crossed Pentagonal Cuploid
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