Angle Addition Postulate

If point C lies in the interior of ∠BGR, then m∠BGC + m∠CGR = m∠BGR.

In the following interactivities, you will use the Angle Addition Postulate along with your knowledge of relationships between angles formed by a transversal intersecting parallel lines to solve problems.

Using Angle Relationships to Solve Problems

In this interactivity, you will apply your knowledge of angles formed by a transversal intersecting parallel lines to solve numerical problems. Your knowledge of vertical angles, linear pairs, and the Angle Addition Postulate will also be useful to you as you work through each example. Click the player button to begin.

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More Applications of Angle Relationships

In this interactivity, you will apply your knowledge of angle relationships to solve algebraic problems. As you work the examples, you will apply your knowledge of the Angle Addition Postulate, vertical angles, linear pairs, and angles formed by a transversal intersecting parallel lines. Click the player button to begin.

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Angle Addition Review

Now that you have learned about the Angle Addition Postulate, review your knowledge in this interactivity. Click the player button to get started.