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This decoration in a detail of the mosque Ertogrulgazi in Achkhabad (Turkmenistan) provid...
In the mosque Ertogrulgazi in Achkhabad (Turkmenistan) we can see a pattern of type 4*2 in...
The flag of Canada has a dihedral symmetry of type D1. You can use a mirror to find out th...
Pong Hau K'i, a simple game of strategy, originated in China and known, with some variants...
This drawing has been used for an exhibit of Simmetria, giochi di specchi - Symmetry, play...
A photo of a Hedera helix leaf like this, taken from the right point of view, evokes a dih...
Pong Hau K'i, a simple game of strategy, originated in China and known, with some variants...
A fig-tree leaf (Ficus carica), this plant has been cultivated in Italy since long time an...
The clappers of this door in Rome on the Aventino have a dihedral symmetry D1 and if you l...
A rosette with dihedral symmetry of type D1, on the decoration of this part of the Fortres...
