Working with Other Polygons
Online
ExploreLearning: Similar Polygons
Compare the similarity of two objects (choosing between a triangle or a quadrilateral). Use the similarity ratio slider to increase or decrease the size of the 2nd figure. Additional supports include the name of each polygon (based on angles), the ability to display the angle measurements and side lengths, or the tools necessary to measure either the angles or sides.
ExploreLearning: Perimeters and Areas of Similar Figures
This is a great gizmo for comparing two similar objects. You can change the shape of Figure 1 and rotate Figure 2. Use the slider to adjust the similarity ratio, making Figure 2 either larger or smaller. Checkboxes are also available to display the Area or Perimeter.
Offline/Local: N/A