Bibliotheca Polyglotta

Euclid: Elementa

καὶ ἐπεὶ δύο γωνίαι ἐπίπεδοι εὐθύγραμμοι ἴσαι εἰσὶν αἱ ὑπὸ ΔΕΖ, ΝΛΜ, καὶ ἐπ᾽ αὐτῶν μετέωροι εὐθεῖαι ἐφεστᾶσιν αἱ ΛΞ, ΕΗ ἴσαι τε ἀλλήλαις καὶ ἴσας γωνίας περιέχουσαι μετὰ τῶν ἐξ ἀρχῆς εὐθειῶν ἑκατέραν ἑκατέρᾳ,

eng

And, since the angles DEF, NLM are two plane rectilineal angles, and on them the elevated straight lines LO, EG are set up which are equal to one another and contain equal angles with the original straight lines respectively,

lat Sic

Et quoniam duo anguli plani rectilinei equales sunt qui sub DEZ, NLM et que sub illos elevate recte superstant LX, EI equales ad se invicem et equales angulos continentes cum principalibus rectis, singulos singulis,

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