Images for Mathematics

A stella octangula

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The stella octangula is made of two tetrahedra that are disposed in such a way that their edges are perpendicular in the midpoints. It can be reproduced between the mirrors in the kaleidoscope relative to the group of symmetry of the cube.
The image has been used in the posters on polyhedra in the exhibition Simmetria, giochi di specchi - Symmetry, playing with mirrors.

The image belongs to the sections...:
Duality (3D geometry)
Two tetrahedra in a cube (3D geometry)
The symmetry group of the tetrahedron (*332) (Symmetry)
Posters about polyhedra (From the exhibitions of matematita)


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