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This street-lamp has a symmetry of type D3, the same symmetry of a right pyramid with an e...
A paving with symmetry of type 2222. You can see also a detail.
A paving with symmetry of type 2222. You can see also a detail.
A rosette with dihedral group of symmetry of type D16 (or D8 if we consider the external p...
This street lamp has a symmetry of type D3, the same of a right pyramid with an equilatera...
An example of frieze of type *22∞ on the floor of the Central Railway Station in Milan.
