προγράψαντες οὖν τά τε θεωρήματα καὶ τὰ ἐπιτάγματα τὰ χρεῖαν ἔχοντα εἰς τὰς ἀποδείξιας αὐτῶν μετὰ ταῦτα γραψοῦμές τοι τὰ προκείμενα → having therefore written at the beginning the theorems and the postulates that are necessary for their proofs, we will then write out for you the propositions
SourceFrench (Bailly abrégé)
3ᵉ pl. impf. Moy. ion. de χράομαι (v. χράω²) se servir de;
3ᵉ pl. impf. Moy. ion. de χράομαι (v. χράω³) consulter l’oracle.