1. 1-4 Measuring Angles

2. When naming angle using three points, the vertex must go in the middle.

3. Problem 1: Naming Angles

5. Types of Angles

6. Problem 2: Measuring and Classifying Angles What at the measures of <LKN, <JKL, and <JKN? Classify each angle as acute, obtuse, or right, or straight.

7. Problem 2: Measuring and Classifying Angles What at the measures of <LKH, <HKN, and <MKH? Classify each angle as acute, obtuse, or right, or straight.

9. Problem 3: Using Congruent Angles Synchronized swimmers form angles with their bodies, as shown in the picture. If m<ABC = 49, what is m<DEF? If m<GHJ = 90, what is m<KLM?

11. Problem 4: Using the Angle Addition Postulate