Final answer:
The perpendicular bisector of a segment is a line that passes through the midpoint of the segment at a 90° angle and divides the segment into two equal halves.
Step-by-step explanation:
The perpendicular bisector of a segment is a line that passes through the midpoint of the segment at a 90° angle.
The perpendicular bisector divides the segment into two equal halves and is perpendicular to the segment.
For example, if AB is a segment, the perpendicular bisector would be a line passing through the midpoint of AB at a 90° angle, dividing AB into two segments of equal length.