Geometry lesson L’Almageste de Ptolémée. Source: gallica.bnf.fr Bibliothèque nationale de France. Département des manuscrits. Arabe 2483, fol. 23v. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.