Question

PLEASE HELP AND EXPLAIN

Answer 1

1.its not an altitude because "An altitude is the perpendicular segment from a vertex to its opposite side."
2.its a perpendicular bisector because "A perpendicular bisector is a special kind of segment, ray, or line that

(1) intersects a given segment at a 90° angle, and

(2) passes through the given segment's midpoint."

Answer 2

hope you understand :)

Answer 3

3. its not angle bisector because "The (interior) bisector of an angle, also called the internal angle bisector, is the line or line segment that divides the angle into two equal parts."