1. 10.2 complementary and supplementary angles

2. Notes
Complementary: 2 angles are complementary if they add to 90 degrees.
Supplementary: 2 angles are supplementary if the add to 180 degrees.

3. Supplementary or Complementary?
m1 = 34° and m2 = 146°
m1 = 23° and m2 = 157°
m1 = 45° and m2 = 45°

4. Find missing angle m1 and m2 are complementary; m1 = 23°
m3 and m4 are vertical angles; m3 = 23°
m5 and m6 are supplementary; m5 = 23°

5. Find missing angles m1 and m2 are complementary angles; m1 = 20°.
m1 and m2 are vertical angles; m2 = 150°.
m3 and m4 are supplementary angles, m3 = 34°.
m1 and m2 are complementary angles; m1 = 63°.
m1 and m2 are vertical angles; m2 = 15°.
m3 and m4 are supplementary angles, m3 = 110°.

6. Find missing angle 40
110 x x

7. Find missing measurementx x 85 35 x x
112 46

8. Wrap up
Questions/Comments
Ic: wkbk. Pg. 153/154
Hw: wksht