​Supplementary Angles

About Geometry Worksheet Assignment 2.12:     

Assignment 2.12 is an introduction to supplementary angles.

Prerequisite Skills: Identify measures of angles (Assignment 2.8).   Name angles (Assignment 2.4).  Solve algebraic equations with one variable.  Evaluate algebraic expressions.   

Definitions:  Supplementary angles are two angles for which the sum of the measures is 180.

                           The supplement of a measure is the difference between the measure and 180.