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Joe Bartholomew
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| Girih Extended | 8 of 16 |
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| In their article about girih tiles, published in the journal Science in 2007, Peter J. Lu and Paul J. Steinhardt note: “The conventional view holds that girih (geometric star-and-polygon) patterns in medieval Islamic architecture were conceived by their designers as a network of zigzagging lines, where the lines were drafted directly with a straightedge and a compass. We show that by 1200 C.E. a conceptual breakthrough occurred in which girih patterns were reconceived as tessellations of a special set of equilateral polygons (girih tiles) decorated with lines.” more... |
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| An intermediate pattern shows both the polygons and girih lines. |
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| The underlying structure of polygons. |
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“Merlon” |