Supplementary Angles		A ray that divides an angle into two adjacent angles that are congruent
Ray		Measure equal to 180*
Conjecture		Two lines that are coplanar and DO NOT intersect
Segment		Two lines that intersect to form a right angle
Congruent Angles		Angle with measure equal to 90*
Straight Angle		Two angles measure have the sum or 180*
Plane		Unproven Statement that is based on observation
Parallel Lines		Divides,or Bisects,a segment into two congruent segments
Line		If C is between A and B
Obtuse Angle		Two different rays that have the same initial point
Midpoint		It has no dimension, represented by a small dot
Compementary Angles		Angles that have the same measure
Angle Bisector		Part of a line that consists of two points
Segment Bisector		Part of a line that consists of a point called an inital point
Angle		Segments that have the same length
Postulate		An angle with measure between 0* and 90*
Opposite Rays		A line extends in one dimension it is usuall represented by a straight line with two arrowheads
Linear Pair		It is usually represented by a shape that looks like a table top or wall
Point		Two angles whose sides form two pairs of opposite rays
Vertical Angles		Measure of 90* and 180*
Congruent Segments		Two adjacent angles whose noncommon sides are opposite rays
Acute Angle		Rules that are accepted without proof
Perpendicular Lines		Two angles whose measure have the sum of 90*
Righ Angle		Ray,Line,or Plane that intersects a segment at its midpoint