quadrilateral with four right angles From Wikipedia, the free encyclopedia
In geometry, a rectangle is a shape with four sides and four corners. The corners are all right angles. It follows that the pairs of sides opposite each other must be parallel and of the same length.
People make many rectangular things, including most tables, boxes, books, and papers. The word comes from Latin words meaning "right" and angle".
A rectangle whose four sides have the same length is called a square.
If a rectangle has length and width w, then:
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