Three short texts related to Naṣīr al-Dīn Muḥammad ibn Muḥammad al-Ṭūsī's (نصير الدين محمد بن محمد الطوسي; d. 1274) annotated edition (تحرير) of the Arabic version of Euclid's (Εὐκλείδης, أقليدس; fl. 300 BC) Elements (Στοιχεῖα; الأصول), perhaps by al-Ṭūsī himself. Contents: (1) Statement on ...