don steward
mathematics teaching 10 ~ 16

Tuesday, 29 January 2013

Schlegel diagrams

if you make one of the faces of a polyhedra 'see through' and peer in
what you see, distorted and flattened, is a 2-D representation of the particular solid
or, alternatively, you could view it as a projection:

what are these (common) solids?

in the 2-D representations, what is the relationship between the numbers of :
  • faces (enclosed spaces)
  • edges (lines)
  • vertices (nodes)?

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