A geometric line is a one-dimensional object that extends in a straight direction for an infinite distance. Line segments are often used in drawing and mathematics, and they are a portion of a geometric line that spans from one defined point to another.
A geometric line can extend in both the "x" and "y'" directions, but it has no thickness itself, making it one-dimensional. If a line is altered to add a curved portion, it is no longer a geometric line. One additional type of line segment the ray, which has a start point but no end point since it extends infinitely.