The Areas of a Parallelogram and a Rectangle with the Same Base and Height Are Equal
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Why are the formulas for the area of a parallelogram and the area of a rectangle the same? Move the slider from left to right to see the parallelogram dissected and the pieces reassembled in the form of a rectangle.
Contributed by: Norm Prokup (January 2013)
Open content licensed under CC BY-NC-SA
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