A line or a plane.
It could be a Euclidean plane.
A line is a series of points that extends in two opposite directions without end.It has no thickness.
A plane.
It is called a line segement
It is a plane
A plane
a line
A line extends in both directions without end. In geometry, a line is defined as a straight one-dimensional figure that has no thickness and extends infinitely in both directions. This concept is fundamental in mathematics and serves as a basic building block for other geometric shapes and concepts.
Plane is one of the undefined terms in mathematics which has no thickness or depth but has length and width, it extends without end in all directions.
i think i line.
plane
A line.