# What is abscissa?

## What Does abscissa Mean

It is known as abscissa (a word derived from the Latin abscissa , "cut" ) to a horizontal direction coordinate that appears in a rectangular Cartesian plane and that is expressed as the distance that exists between a point and the vertical axis. The so-called abscissa axis represents the horizontal coordinate axis.

This term that concerns us and many others, such as equations or axes, are all fundamental and key concepts in what is called analytical geometry. This is a scientific area that is responsible for carrying out what is the study of the various geometric figures through the use of a series of techniques, algebra and mathematical analysis, in what is a coordinate system.
This area must be emphasized that it has its origin in Cartesian geometry, the movement that René Descartes would develop in the period between the seventeenth and eighteenth centuries. However, we cannot ignore that, in one way or another, it also “drinks from the waters” of differential geometry, developed by the German mathematician Carl Friedrich Gauss, and of algebraic geometry.

This last author has gone down in the history of Mathematics for various issues and among them it should be noted, without a doubt, the fact that he was the first scientist to carry out what is the proof of the fundamental theorem of algebra. In the same way, the structure that he gave to Number Theory and the large number of publications he made should not be overlooked, among which Disquisitiones arithmeticae stands out .
In 1801 it was when this aforementioned work was published, which is written in Latin, where it enters fully into what is the fundamental theorem of algebra.
The reference system in relation to an axis (a line ), two (a plane ) or three axes (in space ) that are perpendicular to each other and that coincide at a certain point that is identified with the name of the origin of coordinates , it is known as Cartesian coordinates .
In a plane, the Cartesian coordinate X is called the abscissa , while the Cartesian coordinate Y is distinguished by the expression "ordinate" .
Experts in the field say that the Cartesian system has been named in honor of the philosopher, scientist and mathematician René Descartes ( 1596 - 1650 ), who sought to support his philosophical reasoning from a starting point on which to build all knowledge. Descartes , as many of you will know, is often regarded as the father of analytic geometry.
In the framework of a linear coordinate system , any point that is part of a certain line can be linked and symbolized by means of a real number (which will be positive if it is a point located to the right of O or negative if it is in the left portion). The center of coordinates O corresponds to the value 0.

A plane coordinate system , meanwhile, is made up of two perpendicular lines that intersect at their origin. Each of the points on the plane can be represented by numbers.
Finally, a spatial coordinate system nuclei three lines that are perpendicular to each other (called X, Y and Z), which are at a point of origin (0) and whose points in space can be represented by three numbers .

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