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 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.
A plane
a line
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.