### Section Objectives

**After you have completed this section, you will be able to:**

- Define apply the properties of rays.
- Define apply the properties of angles.
- Define how angles are measured.
- Classify angles.
- Define and apply supplementary and complementary angles.
- Define and apply congruent angles.
- Construct the bisector of an angle.

**Study Guide**

Before you begin this section, download and print this section's study guide. Use this study guide to take notes as you work through this section.