A flat extending endlessly in all directions is called a plane.
A flat surface extending in all directions is a plane.
plane
It is called as a plain.
A plane
A flat extending endlessly in all directions is called a plane.
A flat surface extending in all directions is a plane.
plane
It is called as a plain.
The flat surface that goes on and on in all directions has no boundaries. This flat surface is called infinite surface. Accordingly, the answer is that the flat surface that goes on and on in all directions is called an infinite surface.
A plane
A plane
A plane =)
It is a plane.
Plane
Plane
It is a plane that extends indefinitely in all directions. It is very easy to remember just think about what flys in the air and needs to land on a "flat surface that extends indefinitely in all directions" (the ground).