Education Technology

# Activities

• ##### Subject Area

• Math: Geometry: Points, Lines and Angles

9-12

45 Minutes

• ##### Device
• TI-Nspire™ CX/CX II
• TI-Nspire™ CX CAS/CX II CAS
• TI-Nspire™ Navigator™
• TI-Nspire™
• TI-Nspire™ CAS
• ##### Software

TI-Nspire™
TI-Nspire™ CAS

3.0

## Alternate Interior Angles

#### Activity Overview

Explore the relationships of the angles formed when two parallel lines are cut by a transversal.

#### Objectives

• Students will identify pairs of alternate interior angles and same-side interior angles given two lines cut by a transversal.
• Students will recognize which pairs of alternate interior angles are congruent.
• Students will recognize which pairs of same-side interior angles are supplementary.

#### Vocabulary

• parallel lines
• transversal
• alternate interior angles
• same-side interior angles
• supplementary angles
• congruent angles

#### About the Lesson

This lesson involves students recognizing which pairs of alternate interior angles are congruent and which pairs of same-side interior angles are supplementary. As a result students will:

• Click on different segments in order to identify which segments form alternate interior angles and which segments form same-side interior angles.