Question

How can you check if a segment is a perpendicular bisector of the side of a triangle?

Answer 1

Check if the segment meets the side at a right angle.
Check if the segment divides the opposite vertex into two congruent angles.
Check if the segment meets the side at a right angle and divides the side into two congruent segments.
Check if the segment meets the side at a right angle and divides the vertex angle into two congruent angles.