# Definition:Cartesian Plane/Quadrants/Third

(Redirected from Definition:Third Quadrant)
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## Definition

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.