In crystallography, the tetragonalcrystal system is one of the 7 lattice point groups. Tetragonal lattices result from stretching a cubic lattice along one of its lattice vectors, so that the cube becomes a rectangular prism with a square base (a by a) and height (c, which is different from a).
There are two tetragonal Bravais lattices: the simple tetragonal (from stretching the simple-cubic lattice) and the centered tetragonal (from stretching either the face-centered or the body-centered cubic lattice).
simple tetragonal
body-centered tetragonal
The point groups that fall under this crystal system are listed below, followed by their representations in international notation and Schoenflies notation, and mineral examples.
The Tetragon series are extra-spacious, three season tents that feature side windows for venting, clear windows in the fly, built-in mud mat and hinged gear loft organizer.
Tetragon 5, 7, 8, and 9 are self supporting, 2-pole square dome designs.
Tetragon 1210 is a two room self supporting, free standing 2-pole rectangular dome design.
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