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Con quattro tetraedri regolari di lato 1 e un ottaedro regolare di lato 1 si può costruir...
These cubic boxes can be opened in different ways, in order to put in evidence the possibl...
There are 30 ways to colour a cube, so that each face has a different colour. You can see ...
The rhombic triacontahedron can be coloured with five colours so that, around the vertices...
Accostando a due specchi ortogonali un tetraedro le cui facce sono due triangoli equilate...
If you cut a cube with planes perpendicular to a diagonal, you get sections that are equil...
There are 30 possible dice (if we don't consider the usual convention of disposing in oppo...
The rhombic triacontahedron can be coloured with five colours so that, around the vertices...
Si vede da questo puzzle che il poliedro rosso si ottiene accostando il poliedro giallo, c...
This cubic box can be opened in a unusual way and shows a polygon that can be a section of...
