Definitions for "Cartesian coordinate system"
points, lines, and polygons are most commonly defined on maps using x, y Cartesian coordinates such as longitude/latitude based on principles of Euclidean geometry. This Cartesian coordinate system is the most commonly used tool for measuring and analysing various properties of spatial location.
A two dimensional coordinate system in which x measures horizontal distance and y measures vertical distance. An x,y coordinate defines every point on the plane.
See Coordinate plane