Ancient Greek
Section 83
Scholia in Euclidem, Scholia in opticorum recensionem Theonis (scholia vetera) 83
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83. Ἐφάψεται δή p. 228, ἐὰν γὰρ τρεῖς εὐθεῖαι ἀνάλογον ὦσιν, τὸ ὑπὸ τῶν ἄκρων ἴσον τῷ ἀπὸ τῆς μέσης, καὶ διὰ τοῦτο διὰ τὸ λδ΄ τοῦ γʹ τῆς Ἐπιπέδου ἐφάπτεται.