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en.wikipedia.org/wiki/Rectangle

In Euclidean plane geometry, a

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www.coolmath.com/reference/rectangles

Definitions and formulas for the perimeter of a

www.mathgoodies.com/lessons/vol1/area_rectangle.html

The area of a polygon is the number of square units inside the polygon. To understand the difference between perimeter and area, think of perimeter as the ...

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The

mathworld.wolfram.com/Rectangle.html

www.ixl.com/math/grade-3/find-the-area-of-rectangles-and-squares

Fun math practice! Improve your skills with free problems in 'Find the area of

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msdn.microsoft.com/en-us/library/system.drawing.rectangle(v=vs.110).aspx

Initializes a new instance of the

Answers

rec·tan·gle

[rek-tang-guhl]

NOUN

1.

a parallelogram having four right angles.

Source:
Dictionary.com

rectangles | Define rectangles at Dictionary.com

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