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Mosaic in the Chamber of the Two Sisters (14th-15th century, Alhambra, Granada, Spain). Th...
In the gardens in front of the Geronimo palace in Lisbon there's a rosette with dihedral s...
A flower of Clematis sp..This photo puts in evidence a dihedral symmetry of type D4, so i...
A scheme of type *442 in the courtyard of the Museum of Azulejos in Lisbon.
A hub with a dihedral symmetry group, a D5 group. We can compare it with another hub; or ...
Calcareous techas of echinoderm made of a set of calcareous plates that form a kind of sti...
A flower of Plumbago coerulea. A photograph like this, taken from the right point of view,...
This drawing has been used for an exhibit of Simmetria, giochi di specchi - Symmetry, play...
This rose window at the Cathedral in Milan is a rosette with cyclic symmetry group ot type...
