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A prismatic symmetry of type D6 in this street lamp in Bergamo.
This street-lamp has a symmetry of type D3, the same symmetry of a right pyramid with an e...
This saucer for flower-pots has a symmetry of type D6, the same symmetry as a right pyrami...
This saucer for flower-pots has a symmetry of type D6, the same symmetry as a right pyrami...
On the doorway San Giacomo, one of the doorway of Bergamo Alta, an example of prismatic sy...
The tower Azadi (the gate of the town of Teheran, Iran) has a prismatic symmetry: here we ...
This street lamp has a symmetry of type D3, the same of a right pyramid with an equilatera...
This lamp has a prismatic symmetry group; seen from below it evokes the idea of a rosette ...
A flower of Plumbago coerulea, a creeper used as an ornamental plant. From the point of vi...
From the point of view of topology, this four-leaved clover has a (three-dimensional) pris...
