Gummelt

Gummelt draws Petra Gummelt's quasiperiodic tiling of the plane with overlapping decagons. This tiling is related to the rhombic Penrose tiling, with a decagon associated with each “fat” rhomb, and the side-matching rules replaced by the requirement that wherever two decagons overlap, the coloured darts they contain are superimposed. (Each decagon contains four darts, half of them pointing clockwise and half pointing counter-clockwise, with one pair overlapping.)

Reference: New Scientist, 27 February 1999.




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