Ancient Greek text
α′. Σφαῖρά ἐστι σχῆμα στερε ὸν ὑπὸ μιᾶς ἐπιφανείας περιεχόμενον, πρὸς …
Sphaericorum libros tres, G. Reimer, Berlin, 1852
Theodosius of Bithynia, Sphaerica, ed. Ernst Nizze. Text: The Greek Library, from the Perseus Digital Library and other open sources, CC BY-SA 4.0. Changes: apostrophes normalised and the text divided into reading sections by Interlinea.
Texts from The Greek Library and the Perseus Digital Library, under CC BY-SA 4.0 and CC BY 4.0. Divided into reading sections by Interlinea.