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Orthorhombic and Tetragonal Lattices
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analogous angles bisector body diagonals body-centered cubic Buckminster Fuller Chapter Corresponding to original cube cuboctahedron degenerate stellation Degenerate truncation degrees of freedom deltahedra digonal dihedra dihedron Dirichlet Domain dodeca dual pairs dual Schlegel diagram edge joins edge stellation edge truncation edge valency Edge-stellated edge-truncated equation 4-4 equation 5-1 equation 9-5 equidistant face valency face-centered Face-stellated FIGURE four gonal hedron hence hexagonal tessellation icosahedron icositetrahedron lattice complex lattice points mutually congruent n-valent number of edges number of vertices Number Valency oc-tet original structure orthorhombic parameters pentagonal dodecahedron perpendicular polygonal polyhedra pyramids quadrilateral faces Regular Solids regular structures relation rhombohedral dodecahedron semiregular structures semiregular tessellation shown in Fig space filler space-filling octahedron sphere square pyramid square tessellation struc surface symmetry tetrahedral cells tetrahedron Tetrakis hexahedron tetravalent tion trapezohedra Triangular bipyramid triangular faces triangulated trivalent vertices truncated octahedron Truncated Tetrahedron two-dimensional structures vertex valencies Vertex-truncated yields