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Rosettes of type C2 (on the right) and D2 (all the others) on these carpets in a bazaar of...
This road sign is an example of rosette with dihedral symmetry of type D2.
Rosettes with dihedral symmetry of type D2 on the main gate of the Duomo, in Bergamo Alta.
Unicellular alga covered in silica. The photo of this diatom seen under an optical microsc...
The flag of Japan is an example of a non-discrete group of symmetry (so, it is not a roset...
Awithlaknannai, a game of strategy, similar to the Alquerque, played by the Zuni people, a...
Senet, a lost of the ancient Egypt. We know the shape of the chessboard, but not the rules...
Fanorama, a game of strategy from Madagascar, probably derived from the Alquerque; the dra...
Draughts, a game of war and strategy, elaborated in Europe from the arab Alquerque, whose ...
A lace with dihedral symmetry of type D2.You can see an other one.
