Common Core State Standards
Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure.
2 teaching resources for those 'aha' moments
I Have, Who Has? Game - Complementary and Supplementary Angles
A whole-class game to reinforce students' understanding of complementary and supplementary angles.
Working with Angles PowerPoint
A 12 slide editable PowerPoint template to use when introducing more complex angles to older students.