NewsLab
Jun 28 15:48 UTC

From Pentagons to Pentagrams (johncarlosbaez.wordpress.com)

25 points|by surprisetalk||4 comments|Read full story on johncarlosbaez.wordpress.com

Comments (4)

4 shown
  1. 1. yepyoukno||context
    Great article on stellated forms! I almost missed it due to the subtle unintuitive title!
  2. 2. fbu||context
    The Great Dodecahedron is my favorite polyhedron, and it's possible to build one out of paper. Give it a try when you get a chance !

    https://www.polyhedra.net/en/model.php?name-en=great-dodecah...

  3. 3. red_trumpet||context
    The fact that f(L^2) is positive can be seen without inspecting coordinates: after all it is the length of e_i', hence positive.
  4. 4. andybak||context
    Related work-in-progress if you like polyhedra and tiling transformations: https://ixxyxr.github.io/polyhydra-web/

    It has the Kepler-Poinsot polyhedra and allows you to apply a superset of Conway Operators to them. No true stellation currently (stellation isn't an edge-replacement operator so can't be mimicked by Conway-esque operations)