A line segment is a fundamental geometric concept in geometry, representing a portion of a straight line between two distinct endpoints. It has a fixed length and includes all the points that lie between those two endpoints.
Line segments are finite and well-defined, unlike an infinite line that extends infinitely in both directions. Line segments are commonly used in geometry to create polygons and understand the properties of angles, sides, and shapes.
They serve as building blocks for various geometric constructions and mathematical proofs.