## polar coordinates

polar coordinates a pair of numbers that locate a point in a plane: one is the distance of the point from a fixed point on a fixed line, and the other is the angle made by the fixed line with the line connecting the two points

## polar-coordinates

Noun

(*plural only*)

- (mathematics) The coordinates of a point in a plane, measured as its Cartesian distance from the origin and the angle measured anticlockwise/counterclockwise from the
*x*-axis to a line joining the point to the origin. - (mathematics) The coordinates of a point in three-dimensional space, measured as its Cartesian distance from the origin, the angle measured from the z-axis to a line joining the point to the origin, and the angle measured anticlockwise from the x-axis to this line.