Muhyi al-Din al-Maghribi
Muḥyi al-Dīn al-Maghribī was a Muslim astronomer and mathematician who worked in Damascus, Syria. He later worked under the guidance of Nasir al-Din Tusi in the Maragha observatory in Maragha, Ilkhanate of Persia.
Muhyi al-Din is most known for his works in trigonometry, Book on the theorem of Menelaus, Treatise on the calculation of sines.
He is also known for his commentaries on classic Greek mathematical works, in particular, his commentary about Book XV of Elements about measurements of the regular polyhedra.