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In Kirkjubæjarklaustur (Island) this hexagonal pavement in basalt (Kirkjugólf) is asymme...
In Gardaland the scheme of symmetry of this paving is 632; it becomes 333 when the tiles a...
A drawing to reproduce in a square room of mirrors. The symmetry of this scheme is *442; y...
Ring or Circle, game of strategy, probably of German origin. The circular chessboard has a...
The line of the horizon provides a good representation of the concept of line.
Accostando pentagoni regolari non si riesce a pavimentare il piano.
A problem of equidecomposition between two regular octagons and a regular octagon; from th...
Un poligono regolare stellato di tipo (7,2). Partendo da 7 punti, vertici di un ettagono r...
Possiamo decidere che due poligoni hanno la stessa forma quando è possibile trascinare i ...
