Columbia University Library MS Or 282,
Persian translation by Qotb al-Din Chirazi of
Nasīr al-Dīn al-Tūsī’s edition of Euclid’s Elements,
dated beginning of Shaʻbān in 780 A.H.
(December 1378 CE)
,


fol 12v, figures II.14 et III.1 en bas de page



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