How to use in-sentence of “coordinate system”:
+ As the coordinate system is two-dimensional, each point is determined by two polar coordinates: the radial coordinate and the angular coordinate.
+ In mathematics, the polar coordinate system is a dimensiontwo-dimensional point on a plane is determined by a distance from a reference point and an angle from a reference direction.
+ The geocentric ecliptic system was the principal coordinate system for ancient astronomy and is still useful for computing the apparent motions of the Sun, Moon, and planets.
+ One can introduce a Cartesian coordinate system on a given plane in order to label every point on it with a unique ordered pair, which is composed of two numbers and is the coordinate of the point.
+ A celestial coordinate system is a coordinate system that helps astronomers specify the location of objects in the sky.

