4D Euclidean space
Polytope of the Month
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!
As usual, we give its full Cartesian coordinates.
19 Feb 2018:
16 Feb 2018:
Updated the Johnson solids page to list all 92 solids, along with some explanations of their names.
14 Feb 2018:
Upgraded stylesheet to work better with mobile browsers. Note: if the page layout suddenly looks strange, it's probably because your browser still has the old stylesheet cached. Clear your browser's cache and reload the page, and that should fix it. If not, please let us know.
Upgraded to HTML 5.
9 Feb 2018:
Corrected a typo in the uniform polychora page.
8 Feb 2018:
The Polytope of the Month updates are back! Check out the projections of the tetrahedral ursachoron!
Corrected numerous typos and other errors in several pages. Many thanks to the many nice people who pointed them out!
A technical problem with the contact email address has been fixed. Many apologies for all the bounced mail!
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The 4D FAQ
If you're new here, you may find it helpful to consult the 4D FAQ, which explains what this site is about.
Ever wondered how to visualize 4-dimensional space? It's not as difficult as it may sound at first! Read the 4D Visualization pages to find out more.
These pages contain information about various 4D objects and many images of their projections into 3D.
Other geometric objects: a collection of some simple 4D objects and their 3D projections.