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If we imagine to continue the central drawing outside the frame, we get a frieze of type â...
Mosaic of the 14th-15th century in Alhambra, Spain. The scheme of symmetry is of type 4*2 ...
A pattern of type 4*2 in the paving of a Roman country-house in Vilamoura, Portugal.
A frieze of type ∞× in the courtyard of a house in piazza S. Ambrogio, in Milan.
A decoration of type 4*2 at the Castello Sforzesco in Milan.
A gate with a scheme of symmetry of type 4*2 that can be reproduced in a square room of mi...
A hub with a dihedral symmetry group, a D5 group - if you ignore a few things …
A hub with a cyclic symmetry group, a C5 group. We can compare it with another hub; or wi...
A pattern at the Alhambra (XIV-XV century, Granada, Spain). The scheme has a symmetry of t...
A hub with a dihedral symmetry group, a D6 group. We can compare it with another hub; or ...
