Regular Dodecahedron is Dual of Regular Icosahedron

Theorem

The regular dodecahedron is the dual of the regular icosahedron.


Proof


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Sources

  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next) $12$
  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $20$
  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $30$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $12$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $20$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $30$
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