Midpoints and Bisectors of Segments

Definition- A point (or segment, ray, or line) that divides a segment into two congruent segments bisects the segment. The bisection point is called the midpoint of the segment.

Trisection Points and Trisecting a Segment

Definition- Two points (or segments, rays or lines) that divide a segment into three congruent segments trisect the segment. the two points at which the segment is divided are called the trisection points of the segment.

Angle Bisectors

Definition- A ray that divides an angle into two congruent angles bisects the angle. The dividing ray is called the bisector of the angle.

Angle Trisectors

Definition- Two rays that divide an angle into three congruent angles trisect the angle. The dividing rays are called the trisectors of the angle.