| 11. | Suppose K and L are two triangulations of the same polyhedron.
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| 12. | A regular octahedron is the dual polyhedron of a cube.
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| 13. | Some are listed in the list of Wenninger polyhedron models.
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| 14. | If the definition of a uniform polyhedron is generalised they are uniform.
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| 15. | This is easily seen by examining the construction of the dual polyhedron.
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| 16. | An angle greater than 180?exists on concave portions of a polyhedron.
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| 17. | Polyhedral tools are edged in the shape of a polyhedron.
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| 18. | For a given polyhedron there may be many fold-out nets.
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| 19. | It depicts a nonconvex regular polyhedron known as the small stellated dodecahedron.
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| 20. | The spacecraft was a 26-sided polyhedron in diameter.
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