A quadrant is defined as a region in space that is divided into four equal parts by two axes, namely the X-axis and the Y-axis in the Cartesian Plane. These two axes intersect each other at 90°, and the four regions so formed are called the four quadrants, namely the I-quadrant, II-quadrant, III-quadrant, and IV-quadrant.
The axes of a two-dimensional Cartesian system divide the plane into four infinite regions, called quadrants, each bounded by two half-axes. The axes themselves are, in general, not part of the respective quadrants.
A quadrant can be defined as a region/part of a cartesian plane which is obtained when the two axes intersect each other. It is used to determine the position of a point in a plane.
The meaning of QUADRANT is an instrument for measuring altitudes consisting commonly of a graduated arc of 90 degrees with an index or vernier and usually having a plumb line or spirit level for fixing the vertical or horizontal direction.
These four sections are called quadrants. Quadrants are named using the Roman numerals I, II, III, and IV beginning with the top right quadrant and moving counter clockwise. Ordered pairs within any particular quadrant share certain characteristics. Look at each quadrant in the graph below.
In the cartesian system, the coordinate plane is divided into four equal parts by the intersection of the x-axis (the horizontal number line) and the y-axis (the vertical number line). These four regions are called quadrants because they each represent one-quarter of the whole coordinate plane.
These sections are called "quadrants", and are labelled with Roman numerals (not Arabic numerals), starting at the positive x -axis and going around anti-clockwise.