**Area of a
Parallelogram.**

The area of a parallelogram is given by
A = (base)(height).

Positioning the parallelogram so that the long side
is down
will not change the area. If the long side were called
the
height--instead of the base, as depicted above--then
interchanging the
labels "base" and "height" gives the same result.

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Rectangle : Parallelogram : Triangle
1. : Triangle
2. : Trapezoid 1.
: Trapezoid
2.
: Circle
1. : Circle
2.

Animations by
Bettina Richmond and Tom Richmond.

Tom.Richmond@wku.edu

Updated May 22, 2008.