1-4 Measuring Angles

When naming angle using three points, the vertex

must go in the middle.

Problem 1: Naming Angles

m˂COD =

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

Problem 4: Using the Angle Addition Postulate