A plane.
plane
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 sphere sliced by a plane; or a cone.
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).
A plane
A plane =)
Plane
A plane.
plane
i think that's a plane
A plane is a flat surface that is two dimensional and that extends indefinitely in all directions.
It is a flat two dimensional surface which extends to infinity in all directions.
A flat surface that extends forever is a plane
A plane.
It is a plane