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If we cut a cube along a plane perpendicular to the rotation axis of order three (the one ...
A wooden model of the cube, cut in order to get a regular hexagon (on the left) of a equia...
Un tetraedro regolare di lato 2 e il suo sviluppo. Qual è il rapporto tra il suo volume e...
From the exhibition "Giochi di luce e di specchi - Mirror and light tricks", organized in ...
A parallelepiped with edges 3,4,7, that can be divided in six equal pieces with three stra...
This interactive animation shows the various polygons that can be obtained by cutting a cu...
If we cut the surface of a cube in a particular way, we get a regular hexagon. Parallel ...
The rhombic triacontahedron can be coloured with five colours so that, around the vertices...
The rhombic triacontahedron can be coloured with five colours so that, around the vertices...
The rhombic triacontahedron can be coloured with five colours so that, around the vertices...
problems about polyhedra