APOLLONIUS

Apollonius of Perga in Pamphylia. A Greek mathematician named " the Geometer," who lived at Pergamus and Alexandria in the 1st century B.C., and wrote a work on Conic Sections in eight books, of which we have only the first four in the original, the fifth, sixth, and seventh in an Arabic translation, and the eighth in extracts. The method he followed is that still in use.