TEXT

Risālah fī taḥqīq al-zāwiyah

Title (arabic)

رسالة في تحقيق الزاوية

Title (translit)

Risālah fī taḥqīq al-zāwiyah

Alias

Risālaẗ fī zāwiyaẗ ilỳ Abī Sahl al-Masīḥī
Risālaẗ fī al-zāwiyaẗ ilỳ Abī Sahl al-Masīḥī

Author

Language

Arabic

Subject

Notes

Letter addressed to Abū Sahl al-Masīḥī. Discussed in Quṭb al-Dīn al-Shīrāzī’s work on Daḥraja (rolling); also in Durrat al-tāj (check). Deals with problem of angle of tangency.

ismi_id

92498