# Scholia in Euclidis catoptrica (scholia vetera) 17

Scholia in Euclidem, Scholia in Euclidis catoptrica (scholia vetera), Section 17. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/scholia-in-euclidem/scholia-in-euclidis-catoptrica-scholia-vetera/17

17. Φανερὸν δέ p. 298, ἐπεὶ γὰρ ἴσης οὔσης τῆς ΑΘ τῇ ΓΚ ἴση ἐδείχθη καὶ ἡ Π τῇ Ο, μείζονος δὲ οὔσης τῆς Α τῆς ΓΚ ἐλάσσων ἐδείχθη ἡ Ο τῆς Π, ἐὰν ἡ σύμπτωσις ἐπὶ τῆς περιφερείας γένηται ὡς κατὰ τὸ Σ, ἴση ἔσται ἡ ΣΘ τῇ ΣΚ ἢ ἐλάττων ἡ ΣΘ τῆς ΕΚ· αἱ γὰρ γωνίαι τὸν αὐτὸν λόγον ἔχουσιν ταῖς περιφερείαις, ὡς ἐν τῷ Ϛ΄ τῶν στοιχείων · ὅπερ ἀδύνατον. πολλῷ δὲ πλέον οὐδὲ ἐκτὸς συμπεσοῦνται ὡς ἐπὶ τῆς βʹ καταγραφῆς· πολλῷ γὰρ τὸ ἀδύνατον.

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Scholia in Euclidem, Scholia in Euclidis catoptrica (scholia vetera), ed. Johan Ludvig Heiberg, H. Menge. 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.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Source: https://thegreeklibrary.pages.lisn.upsaclay.fr/works/tlg5022.tlg005.local001/.