Uppsala, Universitetsbibliotek O Vet 20,
Kitāb Ūqlīdīs fī al-Uṣūl, كتاب أوقليديس في الأصول , Isḥāq-Thābit version, completed in Muharram 434, August-September, 1042

fol 167, figure XI.31

α                ©

Uppsala, Universitetsbibliotek O Vet 20,
Kitāb Ūqlīdīs fī al-Uṣūl, كتاب أوقليديس في الأصول , Isḥāq-Thābit version, completed in Muharram 434, August-September, 1042

fol 172v, figure XI.38

α                ©
Uppsala, Universitetsbibliotek O Vet 20,
Kitāb Ūqlīdīs fī al-Uṣūl, كتاب أوقليديس في الأصول , Isḥāq-Thābit version, completed in Muharram 434, August-September, 1042

fol 173, figure XI.39

α                ©