IN MATH: 1. a quadrilateral with 4 right angles and two sets of congruent sides. EX. A square is also a rectangle because it has 4 right angles and all congruent sides, not just two sets of congruent sides.

IN ENGLISH: 1. as defined above.
APPLICATION: See list 140.
1. A rectangle has a width of 4 m and a length of 6 meters. Find its perimeter and area.
2. A rectangle has a width of x meters and a length of 3x + 4 meters. Find its perimeter and area.
IN MATH: 1. adj. having the shape of a rectangle. 2. adj. a graphing display using the Cartesian coordinate system rather than POLAR coordinates.
APPLICATION: See list 140 and 400.
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