| 1. | :None of the references at the bottom of regular polyhedron work out?
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| 2. | It depicts a nonconvex regular polyhedron known as the small stellated dodecahedron.
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| 3. | As such, it is topologically a regular polyhedron of index two:
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| 4. | Hemi faces are also oriented in the same direction as the regular polyhedron's faces.
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| 5. | The cube is a regular polyhedron, and a square prism.
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| 6. | The octahedron is a regular polyhedron, and a triangular antiprism.
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| 7. | As such, it is a regular polyhedron of index two:
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| 8. | :: The MathWorld page Regular Polyhedron works for me.
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| 9. | Having won a prize assignment involving regular polyhedron, he passed a second exam cum laude.
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| 10. | Unlike the great triambic icosahedron, the medial triambic icosahedron is topologically a regular polyhedron of index two.
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