MCQ
The three perpendicular bisectors of a triangle always meet at a single point because each one is the set of points:
Unit-10 Practical Geometry
A Equidistant from the two ends of its side
B Equidistant from the three vertices
C Inside the triangle
D On the sides
Explanation

Each perpendicular bisector is the locus of points equidistant from the two endpoints of its side, so they share a common equidistant point.