Education Technology

Properties of Trapezoids and Kites

Published on 10/24/2011

Activity Overview

Students investigate the properties of trapezoids, isosceles trapezoids, and kites by measuring sides and angles in the figures and by constructing and measuring the diagonals of the figures. By dragging vertices of each figure, they can make and test conjectures by seeing which properties hold true regardless of the orientation, shape, or size of the figure.

Key Steps

  • Image

    On page 1.3, students should move the vertices around to see the different forms for which a trapezoid can take.

    They can measure the angles by pressing MENU > Measurement > Angle and selecting three points—one on a side of the angle, then the vertex, and then a point on the other side.