ἡ ΗΕ. ἐπεὶ οὖν αἱ ὄψεις πρότερον πρὸς τὴν ΗΕ προσπίπτουσιν κατὰ τὰ Η, Λ, M σημεῖα ἤπερ πρὸς τὴν ΚΓ, καί ἐστι μετεωρότερον τὸ Η τοῦ Λ, τὸ δὲ Λ τοῦ Μ, καὶ διὰ μὲν τοῦ Η σημείου ἡ ΒΗΓ φέρεται ἀκτίς, διὰ δὲ τοῦ Λ ἡ ΒΛΖ, διὰ δὲ τοῦ Μ
ἡ ΒΜ∠, μετεωροτέρα ἡ μὲν ΒΓ τῆς ΒΖ, ἡ δὲ ΒΖ τῆς Β∠.
Scholia in opticorum recensionem Theonis (scholia vetera). Scholia in Euclidem. ed. Johan Ludvig Heiberg, ed. H. Menge. United States. 2018.
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