Meaning of triakis octahedron | Babel Free

Definitions

A Catalan solid with 24 isosceles triangle faces, 36 edges and 14 vertices, being the dual of the truncated cube.

Examples

“Examined in this way an octahedron of alum (ammonium or potassium) is found to yield, not one, but three images from each face; and closer inspection shows that the crystal is not really an octahedron, but has the form of a very flat triakis-octahedron.”

CEFR level