# Scholia in Euclidis catoptrica (scholia vetera) 24

Scholia in Euclidem, Scholia in Euclidis catoptrica (scholia vetera), Section 24. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/scholia-in-euclidem/scholia-in-euclidis-catoptrica-scholia-vetera/24

24. Καὶ ἴσον τὸ ὁρώμενον p. 316, ἐὰν ἐπιζεύζωμεν ἀπὸ τοῦ Κ καὶ Ε ἐπὶ τὸ Θ, δύο αἱ ΚΖΘ δυσὶν ταῖς ΕΖΘ ἴσαι, καὶ γωνία καὶ γωνίᾳ, ὥστε καὶ γωνία ἡ ὑπὸ ΚΘΖ ἴση. ἐπεὶ οὖν ὅλη ἡ ὑπὸ ΛΘΖ ὅλῃ τῇ ὑπὸ ∠ΘΖ ἴση· ὀρθὴ γὰρ ἐκατέρα· ἐξ ὧν αἱ προρηθεῖσαι ἴσαι, λοιπὴ ἄρα ἡ ὑπὸ ΕΘ∠ λοιπῇ τῇ ὑπὸ ΚΘΛ ἴση. ἐπεὶ οὖν δύο αἱ ΚΘΛ δυσὶν ταῖς ΕΘΛ ἴσαι, καὶ γωνία γωνίᾳ, καὶ βάσις ἡ ΛΚ βάσει τῇ ∠Ε ἴση.

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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/.