adjacent (angles) - Adjacent angles share a side; they are right next to each other
complementary - The measures of complementary angles sum to 90 degrees.
CPCTC - corresponding parts of congruent triangles are congruent
linear pair - Linear pairs are angles that are both supplementary and adjacent.
median of a triangle - a line segment drawn from any vertex of the triangle to the midpoint of the opposite side (A median divides into two congruent segments, or bisects, the side to which it is drawn.)
midpoint - a point that divides a segment into two congruent parts
ray - A straight set of points that begins at an endpoint and extends infinitely in one direction.
supplementary - The measures of supplementary angles sum to 180 degrees.
vertical angles - A pair of angles such that the rays forming the sides of one and the rays forming the sides of the other are opposite rays.
complementary - The measures of complementary angles sum to 90 degrees.
CPCTC - corresponding parts of congruent triangles are congruent
linear pair - Linear pairs are angles that are both supplementary and adjacent.
median of a triangle - a line segment drawn from any vertex of the triangle to the midpoint of the opposite side (A median divides into two congruent segments, or bisects, the side to which it is drawn.)
midpoint - a point that divides a segment into two congruent parts
ray - A straight set of points that begins at an endpoint and extends infinitely in one direction.
supplementary - The measures of supplementary angles sum to 180 degrees.
vertical angles - A pair of angles such that the rays forming the sides of one and the rays forming the sides of the other are opposite rays.