Un ottaedro

Uno dei cinque poliedri regolari.

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A virtual polyhedron

An octahedron, in the kaleidoscope corresponding to its symmetry group. You can see an oth...

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Un poliedro e il suo sviluppo

Un ottaedro regolare e il suo sviluppo. Qual è il rapporto tra il suo volume e quello di ...

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Un poliedro allo specchio

Accostando a due specchi ortogonali un tetraedro le cui facce sono due triangoli equilate...

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Un poliedro allo specchio

Accostando a due specchi ortogonali un tetraedro le cui facce sono due triangoli equilate...

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A polyhedron

A regular octahedron. Image taken from Giovanni Strüver's memoir Studi sulla Mineralogia ...

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A polyhedron

A regular octahedron. Image taken from Giovanni Strüver's memoir "Studi sulla Mineralogia...

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The rotations of the dodec...

The green straw, laid between the mirrors that form an angle of 90°, shows the 6 rotation...

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The rotations of the dodec...

The green straw, laid between the mirrors that form an angle of 90°, shows the 6 rotation...

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The rotations of the dodec...

The red straw, laid between the mirrors that form an angle of 45°, shows the 3 rotation a...

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