Definitions for

**"Cartesian Plane"**the system whereby position in a plane is determined with reference to two axes (number lines) which are at right angles to each other and intersecting at the origin (the 0s on the number lines); any point on the plane is fixed by an ordered pair of real numbers (co-ordinates) which are the numbers the point refers to on the axes.

a plane in which all points can be described in cartesian coordinates

An (x,y) coordinate system.

a two dimensional model