Ad prop. Π.
φανεροῦ κύκλου κατὰ τὸ ἔ σημεῖον.
σημεῖόν τι ἐπὶ τῆς ἐπιφανείας τῆς σφαίρας.
πρὸς τὸν ὁρίζοντά ἐστιν ὀρθός.
κικοῦ ὁ ζῳδιακός, οὐ μὴν τέμνει αὐτόν.
Σφαιρικῶν.
Scholia in Euclidis phaenomena. Scholia in Euclidem. ed. Heinrich Menge. United States. 2017.
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