Pappus Alexandrinus, Mathematical Collection, Book 8, 1876

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              <s id="id.000168">
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              εἶναι πρὸς τὴν ΑΒ [καὶ ἐν ἑνὶ γίνεσθαι ἐπιπέδῳ τὰς ε#
                <lb n="1"/>
              εὐθείας, καὶ δῆλον ὅτι τὰ Γ Δ Ε Ζ Η σημεῖα]. </s>
              <s id="id.000169">ταῦτα δὲ
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              εἰς ἐπίπεδον ἐκθησόμεθα οὕτως· ἐκ τριῶν μὲν εὐθειῶν
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              τῶν ἐπιζευγνυουσῶν τὰ Γ Δ Ε τρίγωνον ἐν τῷ ἐπιπέδῳ
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              συνεστάτω τὸ ΘΚΛ, ἐκ τριῶν δὲ τῶν ἐπιζευγνυουσῶν τὰ
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              Δ Ε Ζ τὸ ΚΛΜ, ἐκ τριῶν δὲ τῶν ἐπιζευγνυουσῶν τὰ
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              Ε Ζ Η σημεῖα τρίγωνον συνεστάτω τὸ ΛΜΝ· ἔσται ἄρα
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              ἐκκείμενα τὰ ΘΚΛ ΚΛΜ ΛΜΝ τρίγωνα ἀντὶ τῶν ΓΔΕ
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              ΔΕΖ ΕΖΗ τριγώνων. </s>
              <s id="id.000170">ἂν δὴ περὶ τὰ Θ Κ Λ Μ Ν ση-
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              μεῖα γράψωμεν ἔλλειψιν, ὁ ἐλάσσων αὐτῆς ἄξων διάμετρος
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              ἔσται τοῦ κύκλου τοῦ τὸν κύλινδρον ἀπεργασαμένου.
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              </s>
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              <s id="id.000171">ιδ#. </s>
              <s id="id.000172">Ζητουμένου δὴ περὶ πέντε τὰ δοθέντα σημεῖα ἐν
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              ἑνὶ ἐπιπέδῳ κείμενα τὰ Θ Κ Λ Μ Ν ἔλλειψιν γράψαι,
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              περιγεγράφθω, καὶ ἐπιζευχθεῖσαι αἱ ΘΝ ΜΚ πρότερον
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              ἔστωσαν παράλληλοι, καὶ δίχα τετμήσθω ἑκατέρα αὐτῶν
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              τοῖς Α Β, καὶ ἐπιζευχθεῖσα ἡ ΑΒ ἐκβεβλήσθω ἐπὶ τὰ
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              Ε Ζ τῆς ἐλλείψεως σημεῖα· ἡ ΕΖ ἄρα διάμετρός ἐστιν τῆς
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              ἐλλείψεως διὰ τὸν ι# ὅρον τῶν κωνικῶν, θέσει δεδομένη·
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              δοθὲν γὰρ καὶ ἑκάτερον τῶν Α Β σημείων τῇ θέσει. </s>
              <s id="id.000173">ἤχθω
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              δὴ διὰ τοῦ Λ τῇ ΕΖ παράλληλος ἡ ΛΞ, καὶ ἐπιζευχθεῖσαι
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              αἱ ΞΚ ΛΜ συμπιπτέτωσαν τῇ ΘΝ ἐκβληθείσῃ κατὰ τὰ
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              Π Η· δοθέντα ἄρα τὰ Γ Η [1δοθὲν γὰρ ἕκαστον τῶν Λ Μ
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