Truncated 600-Cell
We constructed this design at a recent Stanford University Math Camp.
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Meta Triamond Lattice
A beautiful lattice with some surprising symmetries. -
Understanding Icosahedral Rotations
An explanation of how the rotations of a snub dodecahedron can defy our intuitions -
Hidden-Surface Removal for N-Dimensional Polytopes
Projecting an N-dimensional polytope to 3-d is easier to see when you show only the "front" -
Building the Hyperdo
Step-by-step instructions for building the Hyperdo kit from Zometool -
Oblique Projections of A4 Polytopes
Two different A4 polytopes, relatives of the 5-cell, showing ghost symmetry in their projections to 3D and 2D -
Perfecting Steve Baer's Triple Dome
Steve Baer's triple dome at Drop City can be built precisely with real Zometool struts, as a particular subset of a projected H4 polytope. Three alternatives are discussed. -
Building the Yellow-Stretch 120-Cell
A 3D design created in vZome. Use your mouse or touch to interact. -
Stellations of the Regular Dodecahedron
An aid to visualizing the stellations of the regular dodecahedron -
Chiral RT from Ghee Beom Kim
A lovely design from Ghee Beom Kim, based on a rhombic triacontahedron