# Scholia in Euclidis catoptrica (scholia vetera) 31

Scholia in Euclidem, Scholia in Euclidis catoptrica (scholia vetera), Section 31. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/scholia-in-euclidem/scholia-in-euclidis-catoptrica-scholia-vetera/31

31. Δίχα δὴ τεμεῖ p. 322, ἐὰν γὰρ ἐφαπτομένην ἀγάγωμεν διὰ τοῦ Γ, αἱ μὲν ὑπὸ τῆς ἐφαπτομένης καὶ τῆς ΘΚ γινόμεναι ἴσαι· ὀρθὴ γὰρ ἐκατέρα· ἐξ ὧν αἱ ἀπολαμβανόμεναι ὑπὸ τῶν ἐφαπτομένων καὶ τῶν ἀνακλωμένων ἴσαι διὰ τὸ τὰς ἀνακλωμένας ἴσας εἶναι, ἐξ ὧν τὰς κερατοειδεῖς ἴσας διὰ τὸ σχόλιον τὸ ἐν τῷ αʹ . λοιπὴ ἄρα ἡ ὑπὸ ΒΕ∠1) δίχα τέμνεται.

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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/.