Dinostratus

(Δενοστράτος). A famous mathematician of the Platonic school, the brother of Menechares, and a disciple of Plato. Pursuing the steps of his brother, who amplified the theory of conic sections, Dinostratus is said to have made many mathematical discoveries; but he is particularly distinguished as the inventor of the quadratrix, though there is some reason for ascribing the original invention of this curve to Hippias of Elea (Proclus, Comment. in Eucl. ii. 4).