 In 1086 , 7- and 10 @-@ point girih patterns ( with heptagons , 5- and 6 @-@ pointed stars , triangles and irregular hexagons ) appear in the Friday Mosque at Isfahan . 10 @-@ point girih became widespread in the Islamic world , except in the Spanish Al @-@ Andalus . Soon afterwards , sweeping 9- , 11- , and 13 @-@ point girih patterns were used in the Barsian Mosque , also in Persia , in 1098 ; these , like 7 @-@ point geometrical patterns , are rarely used outside Persia and central Asia . 
