Education Technology

Triangle Sum

Published on 07/19/2006

Activity Overview

This activity is used to discover that the sum of the measures of the triangle angles is constant and to discover ways of proving the theorem listed in the activity.

Before the Activity

See the attached Activity PDF file(s) for detailed instructions for this activity.

During the Activity

Follow the procedures outlined in the activity.
Students will:

  • Discover that the sum of the measures of the triangle angles is constant.
  • After the Activity

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