Bibliotheca Polyglotta

καὶ συνεστάτω πρὸς τῇ ΔΑ εὐθείᾳ καὶ τῷ πρὸς αὐτῇ σημείῳ τῷ Α τῇ ὑπὸ ΑΔΓ γωνίᾳ ἴση ἡ ὑπὸ ΔΑΕ:

on the straight line DA, and at the point A on it, let the angle DAE be constructed equal to the angle ADC [I. 23];

Et constituatur ad DA rectam et quod ad ipsam punctum A angulo ADG equalis angulus DAE.

Deinde super lineam rectam AD in puncto ipsius A constituam angulum angulo ADG equalem sitque angulus ille DAE,

Sitque linea AD fiatque supra punctum A angu1us sicut angulus ADG sitque HAD.

qualemque circa D ex parte B angulum fecerit

No Arabic

ونعمل على (ا) من (ا د) زاوية (د ا ه) مثل زاوية (ا د ج) [كج]

ونعمل على خط (ا د) وعلى نقطة (ا) زاوية مساوية لزاوية (ا د ج) كما عمل ببرهان (كج) من (ا) وليكن زاوية (د ا ه)

acihne adajakoṇatulyaḥ daahakoṇaḥ kāryaḥ

utcunque, faciens angulum quemcunque A D B; Cui ad A, æqualis constituatur E A D.

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