Question

Define perpendicular bisector of a line segment.

Answer 1

A line passing perpendicularly through the mid-point of a given line segment.

Answer 2

Definition: A line which cuts a line segment into two equal parts at 90°. Try this Drag one of the orange dots at A or B and note the the line AB always divides the segment PQ into two equal parts. When it is exactly at right angles to PQ it is called the perpendicular bisector.