1. Chapter 13.1

2. Warm up
Identify the following angles as acute, straight, right, or obtuse:
Solve for the missing angle:
HINT: this is a multistep problem! You must find the angle missing from the bottom right triangle first.

3. Chapter 13.1 angle relationships
Vocabulary:
Complementary
Supplementary

4. Complementary angles
m 1=16 m 1 = 62 m 1 = 34 m 1 = 55 m 2= 74 m 2 = 28 m 2 = 66 m 2 = 35

5. Complimentary angles

6. Supplementary Angles
m 1 = 160 m 1 = 152 m 1 = 90 m 2 = 20 m 2 = 18 m 2 = 90

7. Supplementary angles

8. Practice!!
Classify the following angles and supplementary, complementary or neither: Solve for the missing angle: 60 15 x 45 x 20

9. Challenge Problem
Solve for X
X - 50 45

10. Challenge Problem
Solve for X and then find all 3 angles

11. Challenge problem
Solve for X and then find both angle measurements

12. Homework
Page 711 #’s 9-17, 22-24, 26-28