Which of the following is the best definition of a perpendicular bisector?
(1 point)
• A perpendicular bisector intersects a segment at its midpoint.
• A perpendicular bisector intersects a segment at a 90-degree angle.
• A perpendicular bisector divides an angle into two congruent angles.
• A perpendicular bisector intersects a segment at its midpoint and at a 90-degree angle.