Activity Overview
In this activity, students create parallel lines and a transversal, and study the properties of the lines and their angles.
Before the Activity
Install the Cabri™: Jr. App on the students' graphing calculators using one of these two methods:
TI-Connect™, a TI Connectivity Cable, and the Unit-to-Unit Link Cable
TI-Navigator™ "send to class" feature
See the attached PDF file for detailed instructions for this activity
Print pages 7 - 9 from the attached PDF file for your class
During the Activity
Distribute the pages to the class.
Follow the Activity procedures:
Draw two parallel lines
Construct a transversal
Label the lines and the points of intersection
Measure and label angle measurements
Prepare a table which lists the pairs of angles, types of angles, and their measures
Observe that the pairs of corresponding angles are equal
Note that the pairs of alternate interior angles are congruent
Identify that the pairs of consecutive interior angles are supplementary
Observe that the pairs of alternate exterior angles are congruent
Drag an intersection point around the screen to verify whether the relationship between angles remains same
After the Activity
Review student results:
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary