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
SourceGreek (Liddell-Scott)
ὀλισθών: ἴδε ἐν λ. ὀλισθάνω.
Greek Monotonic
ὀλισθών: μτχ. αορ. βʹ του ὀλισθαίνω.
Russian (Dvoretsky)
ὀλισθών: part. aor. 2 к ὀλισθάνω.