1. 3-5 Complementary & Supplementary Angles

2. Two Angles are Complementary if and only if they add up to 90 degrees (a Right Angle). Definition of Complementary Angles They don't have to be next to each other, just so long as the total is 90 degrees. Adjacent Complementary Angles Are these angles complementary angles? Nonadjacent Complementary Angles Manipulating Complementary AnglesTextbook Examples

3. Two Angles are Supplementary if and only if they add up to 180 degrees (a Straight Angle). Definition of Supplementary Angles They don't have to be next to each other, just so long as the total is 180 degrees. Adjacent Supplementary Angles Are these angles supplementary? Nonadjacent Supplementary Angles Manipulating Supplementary AnglesTextbook Examples

4. Video on Complementary & Supplementary Angles Video on Complementary & Supplementary Angles