Illuminations: Interactive Geometry Dictionary: Areas in Geometry

Interactive Geometry Dictionary: Areas in Geometry


One of the most important measurements in geometry is the measurement of area. The applets in this Interactive Geometry Dictionary (IGD) will show you how to find the area of some common shapes.

The areas of the three shapes shown here are all related to each other. You can find the area of a triangle using the area of a parallelogram, which in turn can be found using the area of a rectangle. Click on the three items below to explore these relationships.

  
Area of a Rectangle
Area of a Parallelogram
Area of a Triangle

NCTM Resources

Navigating through Geometry in 6‑8

Lessons


National Council of Teachers of Mathematics Thinkfinity Verizon Foundation
© 2000 National Council of Teachers of Mathematics
Use of this Web site constitutes acceptance of the Terms of Use