Bibliotheca Polyglotta

ἐπεὶ γὰρ εἰς παραλλήλους τὰς ΑΒ, ΔΕ εὐθεῖα ἐνέπεσεν ἡ ΑΔ, αἱ ἄρα ὑπὸ ΒΑΔ, ΑΔΕ γωνίαι δύο ὀρθαῖς ἴσαι εἰσίν.

For, since the straight line AD falls upon the parallels AB, DE, the angles BAD, ADE are equal to two right angles. [I. 29]

Quoniam enim in equidistantes AB et DE recta incidit AD, anguli ergo BAD et ADE duobus rectis sunt equales.

Probatio huius: Quia linea GA iam cecidit super duas rectas lineas equidistantes AB; GD, erunt duo anguli BAG; AGD duobus rectis equales.

Angulus enim A et angulus G duobus rectis equales. Estque uterque rectus.

Erunt igitur omnia quattuor equalia, angulorum duo bini binis rectis equantur,

No Arabic

لكون زاوية (ا) قائمة وزاوية (ب) اعنى تمامها من قائمتين

وزاوية (د) مثل زاوية (ا)

No Sanskrit

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