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A pyramid with decagonal base as a cupola of this building in Khiva intra-muros (Uzbekista...
The planes that we need to cut out a regular icosahedron (the figure in red in the centre)...
Two mirrors at a particular angle show the rotation axes of the cube: here we see two mirr...
Regular polyhedra.Exhibit of Un tuffo nella quarta dimensione - Diving in the 4th dimensio...
How to transform a tetrahedron into an octahedron: we make some successive sections with 4...
An ant that walks on a cube, sets off from the centre of one face and walks straight on to...
This drawing, attributed to Leonardo da Vinci and taken from the plates of Luca Pacioli's ...
Image taken from Giovanni Strüver's memoir Studi sulla Mineralogia Italiana - Pirite del ...
Cube and octahedron are dual polyhedra: in this position the edges of the cube are perpend...
This drawing, attributed to Leonardo da Vinci and taken from the plates of Luca Pacioli's ...
