WAEC Mathematics 2025 Paper

Concept:The locus of a point equidistant from two fixed points is the perpendicular bisector of the segment joining them.Explanation:Let the two fixed points be $A$ and $B$.A point $P$ is equidistant from $A$ and $B$, so $PA = PB$.The set of all such points $P$ forms a straight line that cuts $AB$ at its midpoint and meets $AB$ at a right angle.This line is called the perpendicular bisector of $AB$.Therefore, the correct option is the perpendicular bisector of the straight line joining the two fixed points.Answer:D. Perpendicular bisector of the straight line joining them.