The spiral pattern of an Aloe polyphylla plant at the University of California Botanical Garden. Stan Shebs via Wikicommons under CC BY-SA 3.0 To the untrained eye, plants may appear to grow rather ...
Honeycombs, some bathroom floors and designs by artist M.C. Escher have something in common: they are composed of repeating patterns of the same shape without any overlaps or gaps. This type of ...
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