Images for Mathematics

The rotations of the tetrahedron

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The green straw, laid between the two mirrors that form an angle of 90°, shows the 3 rotation axes of order 2 in a regular tetrahedron (the lines that go through the midpoints of two opposite edges).
See the other axes of symmetry and see all the axes of symmetry together.

The image belongs to the sections...:
The symmetry group of the tetrahedron (*332) (Symmetry)
In the yellow kaleidoscope (tetrahedron) (From the exhibitions of matematita)
Tetrahedron (3D geometry)

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