Education Technology

# Parallel Lines Cut By A Transversal

Math: Geometry: Points, Lines and Angles
9-12
30 Minutes
TI Connect™
TI-83 Plus Family
TI-84 Plus
TI-84 Plus Silver Edition
Lessons

# Parallel Lines Cut By A Transversal

Activity Overview

In this activity, students learn and increase their knowledge about the angles formed when parallel lines are cut by a transversal. NCTM Geometry Standard covered: Analyze characteristics and properties of 2- and 3-dimensional geometric shapes and develop mathematical arguments about geometric relationships.

Before the Activity

• Install the Cabri Jr. App on the students' graphing calculators using TI Connect™, a TI Connectivity Cable, and the Unit-to-Unit Link Cable
• Set up the TI-Navigator™ system
• See the attached PDF file for detailed instructions for this activity
• Print pages 11-12 from the attached PDF file for your class
• During the Activity

Distribute the pages to your class.

• Draw parallel lines
• Draw a transversal that cuts both parallel lines
• Explore angle relationships formed by dissecting transversal

TI-Navigator activity:
• Load a background image of parallel lines cut by a transversal with angles named
• Instruct students to identify: the interior, the exterior, to an angle with a specific characteristic (congruent to a given angle, supplementary to a given angle)

After the Activity

Review student results:

• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary