triakis octahedron

English

Noun

triakis octahedron (plural triakis octahedra)

  1. (geometry) A Catalan solid with 24 isosceles triangle faces, 36 edges and 14 vertices, being the dual of the truncated cube.
    • 1903, Henry Woodward, Geological Magazine‎[1], page 266:
      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.

Further reading

This article is issued from Wiktionary. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.