# Scholia in opticorum recensionem Theonis (scholia vetera) 67

Scholia in Euclidem, Scholia in opticorum recensionem Theonis (scholia vetera), Section 67. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/scholia-in-euclidem/scholia-in-opticorum-recensionem-theonis-scholia-vetera/67

67. Πρὸς δὲ τὴν ΑΒ τυχοῦσαν p. 208, καὶ πρὸς αὐτὴν γὰρ ὀρθὰς ποιεῖν οὐ δύναται, ἐπειδή, ἐὰν εὐθεῖα δύο εὐθείαις τεμνούσαις ἀλλήλας πρὸς ὀρθὰς ἐπὶ τῆς κοινῆς τομῆς ἐπισταθῇ, καὶ τῷ διʼ αὐτῶν ἐπιπέδῳ πρὸς ὀρθάς ἐστιν· ὑπόκειται δὲ αὐτῷ μὴ οὖσα πρὸς ὀρθὰς ἐν τῷ λϚ΄.

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Scholia in Euclidem, Scholia in opticorum recensionem Theonis (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.tlg004.local001/.