# polar coordinate system

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Related to polar coordinate system: Spherical coordinate system, Cylindrical coordinate system

## polar coordinate system

A system of coordinates in which the location of a point is determined by its distance from a fixed point at the center of the coordinate space (called the pole), and by the measurement of the angle formed by a fixed line (the polar axis, corresponding to the x-axis in Cartesian coordinates) and a line from the pole through the given point. The polar coordinates of a point are given as (r, θ), where r is the distance of the point from the pole, and θ is the measure of the angle.
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2] of roundness measure and polar angle [alpha] in polar coordinate system are described by the equations
Think of our circle in the polar coordinate system of radius, angle, and height with the X positive line serving as 0 degree.

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