author={H. Martyn Cundy},
  journal={The Mathematical Gazette},
  pages={263 - 266}
  • H. Cundy
  • Published 1 December 1952
  • Geology
  • The Mathematical Gazette
The substance of this note arose out of an illustration in the Eighteenth Yearbook of the (American) National Council of Teachers of Mathematics. On p. 299 of this work, which is full of many good things, there appears a diagram of a number of compound polyhedra. One of them is an icosahedron surmounted by an octahedron on every face, producing a solid which is simple and singly-connected (not counting the faces in common with the icosahedron itself). Since the dihedral angle of the icosahedron… 


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