octahedron; ant3; j1
V=6 E=12 F=8
convex, no coplanar faces · symmetry *432 · Eisenstein: oct T=1 (1,0)
Models can be manipulated.
Eisenstein family oct — red this net, blue ancestors, green descendants, grey cousins; mirror sector below the axis (reflections lumped); dashed ray = the Z-multiples. · family map, from the unit’s point of view