The two-dimensional Euclidean space denoted 
.
Euclidean Plane
See also
Cartesian Plane, Complex Plane, Euclidean SpaceExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Euclidean Plane." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/EuclideanPlane.html