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L'ombra di una farfalla, fotografata nel complesso di Angkor Wat, in Cambogia.
The feather of a peacock provides an example of dihedral symmetry of type D1.
A heap of leaves. Some leaves evoke a dihedral symmetry of type D1.
The succulent plant known as "The earth" (because it shows the meridians) and a flower. Wh...
Some christophines (courgettes with a wrinkled surface), photographed in a market in Tachk...
Crystals of quartz, Madagascar. The image appears in the book Il ritmo delle forme - The r...
The idea of parallel lines in this photo of the Shell Beach in Australia.
Plant with a succulent trunk with photosynthetic function. The leaves are transformed in t...
Section of the trunk of wistaria (Wisteria sisensis), an ornamental exotic plant. This se...
At the park Groane (Milan): a leaf of maple evokes a dihedral symmetry of type D1.
nature