Hypsicles, of *Alexandria (1), mathematician and astronomer (fl. c. 150
It is the earliest Greek work to use the 360-degree division of the circle. *Diophantus (ed. Tannery 1. 470) quotes a definition of a polygonal number from a lost work of Hypsicles. Also lost is a work on the harmony of the spheres (*Achilles Tatius(2), ed. Maass, Comm. in Arat. 43).Less
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