# Definition:X-Z Plane

## Definition

The $x$-$z$ plane is the Cartesian plane embedded in Cartesian $3$-space which contains the $x$-axis and the $z$-axis.

It consists of all the points in $S$ such that $x = 0$.

## Also known as

The $x$-$z$ plane can also be referred to as the $z$-$x$ plane.