Education Technology

Investigating the Angle-Sum Theorem of Polygons

Published on 06/09/2008

Activity Overview

This activity will allow students to use Cabri Jr. to find the sum of the measures of interior angles of convex polygons and visually see how the Interior Angle Sum Theorem works.

Before the Activity

Give student copy of activity. Students should have some prior knowledge of Cabri Jr.

During the Activity

Students to use Cabri Jr. to find the sum of the measures of interior angles of convex polygons and visually see how the Interior Angle Sum Theorem works.

After the Activity

Discuss with students their finding and answer any questions that the sudent have. Reteach concepts as necessary.