Area Formulas

for
basic shapes

with
animated
justifications

Area
of a Rectangle

Area of a Parallelogram

Area of a Triangle
1.

Area of a Triangle
2.

Area of a Trapezoid
1.

Area of a Trapezoid
2.

Area of a Circle
1.

Area of a **Circle
2.**

Other animated pages:

The Pythagorean Theorem, Sine Curve, Cosine Curve.

You may also find some of these in the National Curve Bank as Deposit #17, Deposit #18, and Deposit #85.

Tom Richmond's homepage.

Animations by Bettina Richmond and Tom Richmond.

Tom.Richmond@wku.edu

Updated May 26, 2008.