Definition: rectangle from Philip's Encyclopedia

Four-sided geometric figure (quadrilateral), the interior angles of which are right angles and each pair of opposite sides is of equal length and is parallel. It is a special case of a parallelogram. A square is a rectangle with all sides of equal length.

Summary Article: rectangle
From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide

Quadrilateral (four-sided plane figure) with opposite sides equal and parallel and with each interior angle a right angle (90°). Its area A is the product of the length l and height h; that is, A = l × h. A rectangle with all four sides equal is a square.

A rectangle is a special case of a parallelogram. The diagonals of a rectangle are equal and bisect each other.

essays

Rectangles: algebraic expressions

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rectangle © RM, 2018. All rights reserved.

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##### Full text Article rectangle
Philip's Encyclopedia

Four-sided geometric figure (quadrilateral), the interior angles of which are right angles and each pair of opposite sides is of equal length...

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The Macquarie Dictionary

1. a quadrilateral the opposite sides of which are parallel, as a square, rectangle or rhombus. Plural: parallelograms Etymology: Greek parall\xc

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The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide

A quadrilateral (a shape with four sides) with opposite pairs of sides equal in length and parallel, and opposite angles equal. The diagonals of a pa

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