Education Technology
Geometry: Quadrilaterals and Polygons Classroom ActivitiesDownload
hero

Measuring Angles in a Quadrilateral

Updated on

Students determine the sum of the interior angles of a quadrilateral.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download8,854
hero

Properties of Parallelograms

Updated on

Students explore the various properties of parallelograms and the necessary and sufficient conditions that guarantee that a quadrilateral is a parallelogram.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download8,709
hero

Running Circles Around Quads

Updated on

Students explore various properties of cyclic quadrilaterals.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download330
11644_Step_2

From the Center of the Polygon

Published on

Students explore the area of a regular polygon in terms of the apothem and the perimeter in order to derive the formula for a regular pentagon and regular hexagon.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download9,043
10033_Step_2

Perspective

Published on

Students draw figures in one and two-point perspective and compare and contrast the two types of drawings. They then create an isometric drawing and compare it to their drawings in perspective.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download9,307
9084_screen1

Properties of Trapezoids and Isosceles Trapezoids

Published on

A trapezoid is a quadrilateral where one pair of sides is parallel while the other two sides are not. In an isosceles trapezoid the non-parallel sides are congruent. In this activity we will attempt to create an isosceles trapezoid from an ordinary trapezoid, then approach the problem in a different manner and finally, examine the properties of trapezoids.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download8,532
12093_Step_2

Rhombi, Kites, and Trapezoids

Published on

Students discover properties of the diagonals of rhombi and kites, and the properties of angles in rhombi, kites, and trapezoids.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download8,622