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The Epic Interactive Encyclopedia 1997
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1992-09-02
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10 lines
Quadrilateral (four-sided figure) with
opposite sides equal and parallel and with
each interior angle a right angle (90 degrees
). Its area A is the product of the length l
and width w; that is, A = l x w. A rectangle
with all four sides equal is a square. A
rectangle is a special case of a
parallelogram. The diagonals of a rectangle
bisect each other.