1 Chapter 2.7 Notes: Prove Angle Pair Relationships Goal: You will use properties of special pairs of angles.
2 Theorem 2.3 Right Angles Congruence Theorem: All right angles are congruent.Theorem 2.4 Congruent Supplements Theorem:If two angles are supplementary to the same angle (or to congruent angles), then they are congruent.Theorem 2.5 Congruent Complements Theorem:If two angles are complementary to the same angle (or to congruent angles), then they are congruent.
3 Intersecting Lines:When two lines intersect, pairs of vertical angles and linear pairs are formed.Postulate 12 Linear Pair Postulate:If two angles form a linear pair, then they are supplementary.Theorem 2.6 Vertical Angles Congruence Thm:Vertical angles are congruent.
4 Ex. 1: Use the diagram for (a) – ( c). a. If , find b. If , find c Ex.1: Use the diagram for (a) – ( c). a. If , find b. If , find c. If , find