Given Triangle ABC has angle measures of mzA 3x 8 mzB 3x and

Last updated: 3/1/2023

Given Triangle ABC has angle measures of mzA 3x 8 mzB 3x and mzC 3x 10 Prove mzC 64 Statement 1 ABC is a triangle 1 Given 2 mzA mzB mzC 180 2 Triangle Angle 3 mzA 3x 8 4 mzB 3x 5 mzC 3x 10 7 9x 18 180 8 9x 162 Theorem 9 x 18 10 mzC 3 18 10 11 mzC 64 3 Given Reason 4 Given 5 Given 6 3x 8 3x 3x 10 180 6 Substitution 7 Algebra 8 Subtraction Property of Equality 9 2 10 11 Algebra