1. Math Humor
Q: How many feet are in a yard? A: It depends on how many people are in the yard!

2. Apply theorems about the interior and exterior angles of a triangle.
LT 4.2
Apply theorems about the interior and exterior angles of a triangle.

4. Example of Corollary 4-2-2
One of the acute angles in a right triangle is
given. What is the measure of the other acute
angle?
24° ° °
66° ° °

5. Exterior Angles
An angle formed by a side and an extension of a different side of a polygon

6. Remote Interior Angles
The 2 interior angles non-adjacent to an exterior angle of a triangle.

7. Theorems

8. Examples of Exterior Angles
70°

9. Examples of Exterior Angles
z = _____ z + 1 = 6z – z = 6z – = 4z 25 = z Check z + 1 = 6z – = 141

10. Example of Third Angles Theorem

11. Answer

12. Example

13. 33° 66° 81°