# Optica ιδ΄.

Euclid, Optica, ιδ΄.. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/euclid/optica/%CE%B9%CE%B4%CE%84.

Τῶν ἴσων μεγεθῶν καὶ ἀνωτέρω τοῦ ὄμματος κειμένων τὰ πόρρω ταπεινότερα φαίνεται. ἔστω ἴσα μεγέθη τὰ ΑΒ, Γ∠, ΕΖ μετεωρότερα κείμενα τοῦ ὄμματος τοῦ Η. λέγω, ὅτι τὸ ΑΒ τοῦ Γ∠ ταπεινότερον φαίνεται, τὸ δὲ Γ∠ τοῦ ΕΖ. προσπιπτέτωσαν ἀκτῖνες αἱ ΗΒ, Η∠, ΗΖ. ἐπεὶ οὖν ἡ ΗΒ ἀκτὶς τῆς Η∠ ἐστι ταπεινοτέρα, ἡ δὲ Η∠ τῆς ΗΖ, ἀλλʼ ἐν ᾧ εἰσιν αἱ ΗΒ, Η∠ ΗΖ, ἐν τούτῳ ἐστὶ καὶ τὰ Β, ∠, Ζ σημεῖα, ἐν ᾧ δὲ τὰ Β, ∠, Ζ, ἐν τούτῳ καὶ τὰ ΑΒ, Γ∠, ΕΖ μεγέθη, τὸ μὲν ΑΒ ἄρα τοῦ Γ∠ ταπεινότερον φαίνεται, τὸ δὲ Γ∠ τοῦ ΕΖ .

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Euclid, Optica, ed. Johan Ludvig Heiberg, Heinrich 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/tlg1799.tlg009.local001/.