Ibn Khaldūn Note 37 in 8th AH century, in his famous introduction of describing masonry artifacts, points to the
importance of recognizing geometry among architects, believing that it is the knowledge of geometrical problems
and thinking about it along with relying on accurate calculations that make craftsmen successful in establishing
huge monuments (Ibn Khaldûn, 1989). In this era, plans were sent from Shiraz to Yazd for amir Ghiyāth al-Dīn's
school construction (Afshar & Jafari, 2005, p. 119).