Geometry · Points, Lines & Angles
Line Segment
HSG-CO.A.1
Definition
A part of a line bounded by two endpoints, having a definite length.
Examples
- Segment AB has two endpoints and a measurable length, such as AB = 6 cm.
- A segment 10 cm long has two fixed endpoints, unlike a ray or line.
Key rule
Unlike a line, a segment has two endpoints and a fixed, measurable length.
Memory hook
A piece of a line with two ends.