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In this net of the cube, edges that will be identified when the cube folds up are put in e...
This drawing, attributed to Leonardo da Vinci and taken from the plates of Luca Pacioli's ...
A regular octahedron. Image taken from Giovanni Strüver's memoir "Studi sulla Mineralogia...
Si vede da questo puzzle che il poliedro rosso si ottiene accostando il poliedro giallo, c...
The shape of this building in the quarter La Defense in Paris is a polyhedron, but it’s ...
A regular tetrahedron with double side than this one. You can see in a net how many triang...
The stella octangula is made of two tetrahedra that are disposed in such a way that their ...
One of the five regular polyhedra, the tetrahedron, reconstructed in the corresponding kal...
A bicoloured stella octangula in the kaleidoscope of the tetrahedron: the symmetry group o...
This cubic box can be opened in a unusual way and shows a polygon that can be a section of...
