Answer: Line segment.
Step-by-step explanation:
In geometry, a line is an undefined term in which an infinite number of points extending in opposite directions.
It has only one dimension.
When it has endpoints on both the sides, it is known that a line segment (which is an defined term).
Hence, If points A and B are connected by a series of points that extend infinitely in opposite directions, then AB is a line.
So, the term best describes the geometric figure: 'Line segment"