Tetrahedral symmetry

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Tetraedral symmetry 9.JPG Tetraedral symmetry 8.JPG Tetraedral symmetry 3.JPG

Tetraedral symmetry 6.JPG Tetraedral symmetry 2.JPG Tetraedral symmetry 4.JPG

This structure has the same symmetry group as a regular tetrahedron, one of the five regular solids : regular tetrahedron, octahedron, cube, icosahedron, dodecahedron.

References : Plato, Euclid,...

See also :

icosahedron - cubic symmetry - octahedron