# Geodaesia [Sp.] 10.7

Hero of Alexandria, Geodaesia [Sp.], Chapter 10. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/hero-of-alexandria/geodaesia-sp/10.7

τὴν δὲ κάθετον αὐτοῦ εὑρεῖν. ποίησον οὕτως· ἄφελε ὁμοίως τὸ ι΄ καὶ τὸ λ΄ τῆς μιᾶς τῶν πλευρῶν, καὶ τὸ λοιπὸν ἔσται ὁ ἀριθμὸς τῆς καθέτου. οἷον ἔστω ἑκάστη τῶν πλευρῶν, ὡς εἴπομεν, σχοινίων ιβ, μιᾶς δὲ πλευρᾶς τὸ ι΄ ᾱ ε΄, καὶ τὸ λ΄ γίνεται γ΄ι΄ καὶ ε΄. ταῦτα συνθεὶς εὑρήσεις ᾱ U+2220 ι· ταῦτα ὑπεξαίρει ἐπὶ τῶν ιβ· λοιπὰ ι γ΄ ιε΄· τοσούτων σχοινίων ἐστὶν ἡ κάθετος. εἶτα πολλαπλασίασον τὸ U+2220ʹ τῆς βάσεως ἐπὶ τὴν κάθετον ἤγουν τὰ ϛ ἐπὶ τὰ ῑ γ΄ ι΄ καὶ ε΄· γίνονται καὶ οὕτως ξβ γ΄ ι΄ καὶ ε΄· καὶ ἔστι τὸ ἐμβαδὸν σχοινίων τοσούτων. ὧν τὸ U+2220΄· γίνονται λα ε΄· καὶ ἔστι γῆς μοδίων λα καὶ λιτρῶν η.

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Hero of Alexandria, Geodaesia [Sp.], ed. Johan Ludvig Heiberg. Text: The Greek Library, from the Perseus Digital Library and other open sources, CC BY-SA 4.0. Changes: apostrophes normalised and the text divided into reading sections by Interlinea.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Source: https://thegreeklibrary.pages.lisn.upsaclay.fr/works/tlg0559.tlg015.local001/.