Recognize that the measure of an angle is independent of the distance between any two points on the rays that form the angle and of the length of the representation of the rays.
Relate the measure of an angle to the fraction of a turn in a complete circle.
Investigate and define perpendicular bisector and angle bisector.
Describe the property that any point on the perpendicular bisector of a segment is equidistant from the endpoints of the segment it bisects.
Describe the property that any point on the bisector of an angle is equidistant from the sides of the angle it bisects.