Education Technology

Construction of a Rectangle and Investigating Its Properties

Published on 10/12/2008

Activity Overview

Cabri Jr. activitiy detailing how to construct a rectangle and investigating the following properties:

  1. The diagonals of the rectangle are congruent.
  2. The diagonals of a rectangle split the rectangle into four isosceles triangles.
  3. The diagonals of a rectangle form two sets of congruent isosceles triangles.

Before the Activity

Make sure the Cabri Jr.™ app is loaded on the students' calculators.

During the Activity

This activity provides step by step instructions on how to construct a rectangle using the Cabri Jr. application for the TI-84 family of calculators. Then it provides step by step instructions for investigating the properties of the rectangle. All students will need is a copy of the activity and a calculator with the Cabri Jr. application.