# Cartesian coordinate system

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Cartesian coordinate system
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## Cartesian coordinate system

n.
A coordinate system in which the coordinates of a point are its distances from a set of perpendicular lines that intersect at an origin, such as two lines in a plane or three in space.

## Car·te·sian coordinate system

(kär-tē′zhən)
A system in which the location of a point is given by coordinates that represent its distances from perpendicular lines that intersect at a point called the origin. A Cartesian coordinate system in a plane has two perpendicular lines (the x-axis and y-axis); in three-dimensional space, it has three (the x-axis, y-axis, and z-axis).
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 Noun 1 Cartesian coordinate system - a coordinate system for which the coordinates of a point are its distances from a set perpendicular lines that intersect at the origin of the systemcoordinate system, frame of reference, reference frame, reference system - a system that uses coordinates to establish position
References in periodicals archive ?
Referring to Figure 11, we establish the coordinate system O[x.sub.1] [x.sub.2], where the origin O is the isocenter, [x.sub.2] axis is parallel to the isoray and points to X-ray source S, and [x.sub.1] axis and x2 axis form right-handed coordinate system. Let [phi] denote the angle contained by the [x.sub.1] axis and linear detectors.
1), whereas parameters [R.sub.z] and [R.sub.y] are matrices of elementary rotations of the right-handed coordinate system in the direction, which is opposite to the clockwise direction, with reference to corresponding axes.
It is more convenient at this juncture to choose the point H as the origin and to determine the coordinates of T and S, ([x'.sub.T], [y'.sub.T], 0), respectively, ([x'.sub.S], [y'.sub.S], 0) (say), relative to a new right-handed coordinate system x'y'z' where x' and y' lie in the plane P containing the circle of latitude [[theta].sub.L] as shown in Figure 6, and z' is parallel to [N.bar].

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