The Lesson
A rectangle is a four sided shape with four right angles.
Dictionary Definition
The Oxford English Dictionary defines a rectangle as "a plane figure with four straight sides and four right angles, opposite sides being parallel and equal in length; especially one in which adjacent sides are unequal, as contrasted with a square."Properties of Rectangles
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Opposite sides of a rectangle are of equal length.
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All angles in a rectangle are right angles.
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Opposite sides of a rectangle are parallel.
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All angles of a rectangle add up to 360°.
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The diagonals of a rectangle are equal in length. They bisect each other. They cross each other half-way along their lengths.
The Perimeter of a Rectangle
The perimeter of a rectangle is given by the formula:
The Area of a Rectangle
The area of a rectangle is given by the formula:
Read more about how to find the area of a rectangle