Given B and C form a linear pair A B and mzA 120 Prove m C

Last updated: 2/16/2023

Given B and C form a linear pair A B and mzA 120 Prove m C 60 Statement 1 A B 2 m A mzB 3 m A 120 4 120 m B 5 B and C form a linear pair 6 mzB m C 180 7 120 mzC 180 8 m C 60 Reason 1 Given 2 3 Given 4 Substitution 5 Given 8 6 Linear Pair Postulate 7 Substitution Select the reason that best supports Statement 2 in the given proof A Reflexive Property B Definition of Congruency C Linear Pair Postulate D Subtraction Property of Equality