He extended the range of geometrical constructions presented by Euclid, for example finding the circle tangent to three given circles, but is best known for his eight-volume Conics.
He extended the range of geometrical constructions presented by Euclid, for example finding the circle tangent to three given circles, but is best known for his eight-volume Conics. According to references in PtolemyÕs Almagest, he originated the sys  tems of eccentric and epicyclic motion to explain planetary motion.
He extended the range of geometrical constructions presented by Euclid, for example finding the circle tangent to three given circles, but is best known for his eight-volume Conics.
Apollonius of Perga