Definition:Cartesian Coordinate System/Quadrants/Third

From ProofWiki
Jump to navigation Jump to search

Definition

Quadrant-III.png

Quadrant $\text{III}: \quad$ The area below the $x$-axis and to the left of the $y$-axis is called the third quadrant.

That is, the third quadrant is where both the $x$ coordinate and the $y$ coordinate of a point are negative.


Sources