kvadráns

A kvadrant is a geometrical term referring to one of the four sections into which a plane is divided by two perpendicular lines, typically the x-axis and y-axis in a Cartesian coordinate system. These lines intersect at the origin, and the plane is divided into four regions, each called a quadrant.

The quadrants are numbered in a counter-clockwise direction, starting from the upper right. Quadrant I is where both the x and y coordinates are positive. Quadrant II is where the x coordinate is negative and the y coordinate is positive. Quadrant III is where both the x and y coordinates are negative. Quadrant IV is where the x coordinate is positive and the y coordinate is negative.

The concept of quadrants is fundamental in analytic geometry and is used extensively in graphing functions, analyzing data, and understanding spatial relationships. The boundaries between the quadrants are the axes themselves. Points lying on an axis are not considered to be in any quadrant. The term "kvadrant" is a direct transliteration or cognate of the word "quadrant" from languages like Swedish or Norwegian.