4D Euclidean space

News Archive

Feb 2018

Yes, the Polytope of the Month is back! We apologize for the 4-year hiatus. Technical troubles and personal situations made it difficult to keep up with the updates. But we're back, and we're bringing you more CRFs (convex regular-faced polytopes) and other polytopes to look at!

This month, we'll resume updates with a modest, but nonetheless interesting addition: the tetrahedral ursachoron, a cute little 4D CRF polytope that generalizes the tridiminished icosa­hedron to 4D:

tetrahedral ursachoron

This polychoron's surface has 5 tetrahedra, 4 tridiminished icosahedra (J63), and an octahedron. Head on over to the tetrahedral ursachoron page to learn its structure and how it generalizes J63.

As usual, we give its full Cartesian coordinates.

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Last updated 28 Feb 2018.

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