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Cartesian coordinate system
The coordinate plane is sometimes call the Cartesian plane because Rene Descartes is often credited with inventing the coordinate plane and so the coordinate plane is sometimes called the Cartesian plane,in his honor.
The Cartesian coordinate system allows a geometric curve to be described in algebraic terms. This then allows the use of algebraic tools including differentiation and integration to be used to solve geometric problems such as the turning points of curves, their volumes of rotation and so on. It also enables geometric methods to be applied to solving algebraic problems.
a Cartesian Coordinate plane
It is called Cartesian after its inventor, Rene Descartes. It is said that he was lying in bed, ill, and looked up to see an insect on the ceiling. He figured out that the position of the insect could be pinpointed by its distances from two mutually perpendicular edges of the ceiling. And so was born the coordinate plane.