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[2] μετρήσωμεν οὖν τοῦ κίονος ἢ δένδρου τὴν σκιάν, καὶ εὑρέθησαν νόμιζε πόδες ρ· λέγω, ὅτι ν πόδας ἔχει. ὥσπερ καὶ ἐπὶ τῆς ῥάβδου διπλασίονα ἀναλογίαν ἔχει ἡ σκιά, οὕτω καὶ ἐπὶ τοῦ κίονος ἤτοι ἐπὶ τοῦ δένδρου τῷ διαλογισμῷ, καίτοι διάφοροι εὑρίσκονται.
ὥσπερ οὖν ἐνταῦθα τὰ μὲν οἷον λόγον ἔχει ἡ ῥάβδος πρὸς τὴν ἀφʼ ἑαυτῆς σκιάν, οὕτω καὶ τὸ δένδρον πρὸς τὴν ἀφʼ ἑαυτοῦ σκιὰν καὶ ὁ κίων.
ὥσπερ οὖν ἐνταῦθα τὰ μὲν οἷον λόγον ἔχει ἡ ῥάβδος πρὸς τὴν ἀφʼ ἑαυτῆς σκιάν, οὕτω καὶ τὸ δένδρον πρὸς τὴν ἀφʼ ἑαυτοῦ σκιὰν καὶ ὁ κίων.
Stereometrica. Hero of Alexandria. ed. Johan Ludvig Heiberg. United States. 2018.
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