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Girih Extended #56
   
Islamic architects began using the girih system around 1200 CE, but the technique was lost sometime after the 15th century. The girih tile system was rediscovered in 2005 by Dr. Peter J. Lu of the Harvard University Physics Department.  more...
  
  Girih     Girih and Polygons     Polygons  
Girih Extended #56
   
An intermediate pattern shows both the polygons and girih lines.
  
  Girih     Girih and Polygons     Polygons  
Girih Extended #56
   
The underlying structure of polygons.
 
  

“Tympanum Koch Variant”