11121. Qaul fī taṣḥīḥ masāʼil al-jabr bil-barāhīn al-handasīyah. [Transcribed from MS. Thurston 3, f. 140v ll.vii-xxxvii.]
11122. Qaul fī tathlīth al-zāwiyat al-mustaqīmat al-khaṭṭain. [Transcribed from MS. Thurston 3, f. 131v l. xxviii - f. 132r l. viii.]
11131. Qawāʻid taʻlīm al-dīn al-masīḥī ʻalá mā huwa qāʼim fī al-kanāʼis al-baljīkīyah ay al-flaminkīyah