Regarding royal palaces build by Sultan Mahmud of Ghazni in
Ġaznīn, Abul-Fazl BayhaqīNote 27 sees him as a knowledgeable man of architecture, writing so: all people built and
drew lines with their own magnificent, hands based on their knowledge. There are signs in such tools, especially in
geometry. (Beyhaqi, 2011). Moreover, Abdillah Ahmed Ibn Yusuf Ibn Hud, the ruler of Saragossa (Zaragoza) in
Andalusia compiled a textbook of geometry, using a huge set of mathematic books gathered in his library (Denny,
Necipoglu, & al-Asad, 1998) (See table2)