being composed of three 8-cubes around each 7-face. It is also called an enneract, a portmanteau of tesseract (the 4-cube) and enne for nine (dimensions)...

symmetry. Rectified enneract (Acronym: ren) (Jonathan Bowers) Birectified enneract (Acronym: barn) (Jonathan Bowers) Trirectified enneract (Acronym: tarn)...

cross-polytopes or orthoplexes. The dual polytope is the 9-hypercube or enneract. Enneacross, derived from combining the family name cross polytope with...

Hexadeca-8-tope {4,3,3,3,3,3,3} 256 1024 1792 1792 1120 448 112 16 1 9 9-cube Enneract Octadeca-9-tope {4,3,3,3,3,3,3,3} 512 2304 4608 5376 4032 2016 672 144...

vertices of a demienneract centered at the origin are alternate halves of the enneract: (±1,±1,±1,±1,±1,±1,±1,±1,±1) with an odd number of plus signs. Klitzing...

rings in the group diagram, including two regular ones: {4,37} - 9-cube or enneract - {37,4} - 9-orthoplex or enneacross - Demihypercube D9 family: [36,1,1]...