1-4 Measuring Angles. When naming angle using three points, the vertex must go in the middle.

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Presentation transcript:

1-4 Measuring Angles

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

Problem 1: Naming Angles

Types of Angles

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.

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.

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?

Problem 4: Using the Angle Addition Postulate