[71] 71. Ἡ ΝΟ p. 21Ο,
11 ἡ ΝΟ γὰρ ἐκτὸς πεσεῖται τοῦ ΛΣΜ τμήματος· ἡ γὰρ ΝΞ τῆς ΝΡ μείζων ἐστίν· ἐπὶ γὰρ τῆς ΝΞ ἐστι τὸ κέντρον τοῦ κύκλου τοῦ ΛΣ·
μείζων γάρ ἐστι τῆς ΛΝ. ἐπεὶ γὰρ ἐν κύκλῳ τῷ ΛΞΜ εὐθεῖά τις ἡ ΝΞ εὐθεῖάν τινα τὴν ΛΜ δίχα καὶ πρὸς ὀρθὰς τέμνει, ἐπὶ τῆς ΝΞ ἄρα ἐστὶ τὸ κέντρον τοῦ ΛΞΜ κύκλου. ὑπόκειται δὲ ἡ ΝΞ μείζων τῆς ἐκ τοῦ κέντρου, ἐπειδὴ καὶ ἡ ΕΖ, καὶ ἀεὶ ἡ ἔγγιον
τοῦ κέντρου τῆς ἀπώτερον μείζων.
μείζων γάρ ἐστι τῆς ΛΝ. ἐπεὶ γὰρ ἐν κύκλῳ τῷ ΛΞΜ εὐθεῖά τις ἡ ΝΞ εὐθεῖάν τινα τὴν ΛΜ δίχα καὶ πρὸς ὀρθὰς τέμνει, ἐπὶ τῆς ΝΞ ἄρα ἐστὶ τὸ κέντρον τοῦ ΛΞΜ κύκλου. ὑπόκειται δὲ ἡ ΝΞ μείζων τῆς ἐκ τοῦ κέντρου, ἐπειδὴ καὶ ἡ ΕΖ, καὶ ἀεὶ ἡ ἔγγιον
τοῦ κέντρου τῆς ἀπώτερον μείζων.
Scholia in opticorum recensionem Theonis (scholia vetera). Scholia in Euclidem. ed. Johan Ludvig Heiberg, ed. H. Menge. United States. 2018.
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