# De utilitate mathematicae 44

Theon Smyrnaeus, De utilitate mathematicae, Paragraph 44. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/theon-smyrnaeus/de-utilitate-mathematicae/44

εἰσὶ δὲ καὶ πυραμοειδεῖς ἀριθμοὶ πυραμίδας κατα- μετροῦντες καὶ κολουροπυραμίδας. κόλουρος δὲ πυρα- μίς ἐστιν ἡ τὴν κορυφὴν ἀποτετμημένη. τινὲς δὲ [κόλουρον] τὸ τοιοῦτον τραπέζιον προσηγόρευσαν ἀπὸ τῶν ἐπιπέδων τραπεζίων· τραπέζιον γὰρ λέγεται, ὅταν τριγώνου ἡ κορυφὴ ὑπὸ παραλλήλου τῇ βάσει εὐθείας ἀποτμηθῇ.

---

Theon Smyrnaeus, De utilitate mathematicae, ed. Eduardus Hiller. 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/tlg1724.tlg001.local001/.