Duality of Noble Polyhedra
We can distinguish between dual structural forms (topologies) on the one hand, and dual geometrical arrangements when reciprocated about a concentric sphere, on the other. Where the distinction is not made below, the term 'dual' covers both kinds.
The dual of a noble polyhedron is also noble. Many are also self-dual:
- The regular polyhedra form dual pairs, with the tetrahedron being self-dual.
- The disphenoid tetrahedra are all topologically identical. Geometrically they come in dual pairs – one elongated, and one correspondingly squashed.
- A crown polyhedron is topologically self-dual. It does not seem to be known whether any geometrically self-dual examples exist.
- The wreath and V-faced polyhedra are dual to each other.
Read more about this topic: Noble Polyhedron
Famous quotes containing the word noble:
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—Abigail Adams (1744–1818)