ιβ΄.
ὁμοίως δὲ καὶ τὸ Β εἰς τὰ δεξιὰ δοκεῖ παρῆχθαι ἤπερ τὸ Α. ὥστε τῶν εἰς τοὔμπροσθεν μῆκος ἐχόντων τὰ μὲν ἐν τοῖς δεξιοῖς εἰς τὰ ἀριστερὰ δοκεῖ παρῆχθα, τὰ δὲ ἐν τοῖς ἀριστεροῖς εἰς τὰ δεξιά.
Opticorum recensio Theonis. Euclid. ed. Johan Ludvig Heiberg, ed. Heinrich Menge. United States. 2018.
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