Ancient Greek
Section 38
Scholia in Euclidem, Scholia in Euclidis catoptrica (scholia vetera) 38
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38. Ἀνακλώμεναι αἱ ὄψεις p. 328, ἐὰν ἀπὸ τοῦ Κ ἐπιζεύξωμεν ἐπὶ τὸ κέντρον, τουτέστι τὸ Ζ, ἔσονται αἱ τῶν ἡμικυκλίων ἴσαι κατὰ τὴν ἐφαρμογὴν ἡ ὑπὸ ∠ΚΖ τῇ ὑπὸ ΖΚΑ. ὥστε ἡ ὑπὸ ∠ΚΘ ἐλάττων τῆς ὑπὸ ΖΚΑ, πολλῷ πλέον τῆς ὑπὸ ΘΚ Α. ὁμοίως καὶ ἐὰν ἀπὸ τοῦ Ν ἐπιζεύξωμεν ἐπὶ τὸ Ζ. ὥστε ἀνακλώμεναι αἱ ψεῖς αἱ ΘΚ, ΜΝ ἥξουσιν ὡς αἱ ΚΛ, ΝΞ διὰ τὸ ε΄.