### Objective

Students will practice solving problems involving the interior angles of a triangle.

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Students will practice solving problems involving the interior angles of a triangle.

**Directions:**
*Use the Interior Angle Sum Theorem to solve each of the problems below*

Use your knowledge of the interior angles of a triangle as well as supplementary angles to solve the problems below:

This is a 4 part worksheet:

**Part I**Model Problems**Part II**Practice**Part III**Challenge Problems**Part IV**Answer Key