snub disphenoids

Noun

snub disphenoid (plural snub disphenoids)

1. A non-regular convex polyhedron that has 12 equilateral triangles as faces and 18 edges and is a Johnson solid.
   • For the snub disphenoid, our existence proof used the intermediate value theorem in the real numbers to argue that as AB decreases and CD increases there is a point where they become equal.2005, Robin Hartshorne, Geometry: Euclid and Beyond, page 457

   Synonyms:

   Siamese dodecahedron, dodecadeltahedron