Greek mathematician and friend of Plato who is credited with discovering the conic sections.[2 related articles]
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http://www.britannica.com/eb/a-z/m/70
(c.380-c.320 BC) A Greek mathematician, thought to have been a pupil of Eudoxus, who is famed for his discovery of the conic sections and for being the first to show that ellipses, parabolas, and hyperbolas are formed by cutting a cone in a plane that is not parallel to the base...
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http://www.daviddarling.info/encyclopedia/M/Menaechmus.html
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