space filling πολυεδρον
element of diamond space filler
extended truncated tetrahedron
silver oblate rhombohedron part 1
silver oblate rhombohedron part 2
octahedron and cuboctahedron part 1
octahedron and cuboctahedron part 2
octahedron and cuboctahedron part 3
some surfaces with negative curvature part 1
some surfaces with negative curvature part 2
unit of the rhombohedral graphite lattice
unit of the lattice of Si in quartz
square and triangular dipyramid
hexagonal close packing lattice part 1
hexagonal close packing lattice part 2
unit solids (cells) of lattices
tetrahedral & octahedral construction
triangular planes in 4 directions
