# Polar Coordinate System

In mathematics, the polar coordinate system is a two-dimensional coordinate system in which each point on a plane is determined by a distance from a fixed point and an angle from a fixed direction.

The fixed point (analogous to the origin of a Cartesian system) is called the pole, and the ray from the pole in the fixed direction is the polar axis. The distance from the pole is called the radial coordinate or radius, and the angle is the angular coordinate, polar angle, or azimuth.

### Other articles related to "coordinate systems, coordinate system, polar coordinate system, systems, coordinate, polar, coordinates":

Coordinate Systems in Two-dimensional Spaces
... The most popular coordinate systems are the Cartesian coordinate system, the polar coordinate system and the geographic coordinate system ... Cartesian coordinate system Polar coordinate system Geographic coordinate system ...
Polar Coordinate System - Applications - Modeling
... Systems displaying radial symmetry provide natural settings for the polar coordinate system, with the central point acting as the pole ... Systems with a radial force are also good candidates for the use of the polar coordinate system ... These systems include gravitational fields, which obey the inverse-square law, as well as systems with point sources, such as radio antennas ...
Coordinate Conditions
... words, the real world does not care about our coordinate systems ... it is often useful to fix upon a particular coordinate system, in order to solve actual problems or make actual predictions ... A coordinate condition selects such coordinate system(s) ...
Polar Coordinate System
... Another common coordinate system for the plane is the Polar coordinate system ... as the pole and a ray from this point is taken as the polar axis ... For a given angle θ, there is a single line through the pole whose angle with the polar axis is θ (measured counterclockwise from the axis to the line) ...
Construction Surveying - Coordinate Systems Used in Construction
... Land surveys and surveys of existing conditions are generally performed according to geodesic coordinates ... However for the purposes of construction a more suitable coordinate system will often be used ...

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