Quadrant Quadrant is the region enclosed by the intersection of the X-axis and the Y-axis. On the cartesian plane when the two axes, X-axis and Y-axis, intersect with each other at 90 º and there are four regions formed around it, and those regions are called quadrants. So, every plane has four quadrants each bounded by half of the axes. Each quadrant is denoted by Roman numerals and named Quadrant I, Quadrant II, Quadrant III, and Quadrant IV based on their position with respect to the axes. We giving the complete details regarding quadrants, its definition, signs of coordinates on each quadrant , and its examples in the following sections. Have a look at them and know about quadrant 1, quadrant 2, quadrant 3, and quadrant 4. Quadrant Definition Take a graph and draw two perpendicular lines horizontal line (x-axis), vertical line (y ... Learn all four quadrants of a coordinate system. The plane of the graph paper is divided into four regions by the coordinate axes and the four regions are called quadrants.