Students learn how to apply the interior, alternate and corresponding angle properties in parallel lines.

As the students become more confident each of the problems require multiple geometrical properties to calculate the unknown angle.

**Differentiated Learning Objectives**

- All students should be able to calculate an unknown angle in parallel lines using a single property.
- Most students should be able to calculate unknown angles in parallel lines using multiple properties.
- Some students should be able to calculate set up and solve equations involving angles in parallel lines.