VS.

Parallelogram vs. Rectangle

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Parallelogramnoun

(geometry) A convex quadrilateral in which each pair of opposite edges are parallel and of equal length.

Rectanglenoun

(geometry) A quadrilateral having opposing sides parallel and four right angles.

Parallelogramnoun

either of two rectangular areas (respectively the large parallelogram and the small parallelogram) abutting the goal line in front of the goal. (Since 1986 officially named the large rectangle and small rectangle, though the older names are still occasionally used.)

Rectanglenoun

A four-sided figure having only right angles; a right-angled parallelogram.

Parallelogramnoun

A right-lined quadrilateral figure, whose opposite sides are parallel, and consequently equal; - sometimes restricted in popular usage to a rectangle, or quadrilateral figure which is longer than it is broad, and with right angles.

Rectangleadjective

Rectangular.

Parallelogramnoun

a quadrilateral whose opposite sides are both parallel and equal in length

Rectanglenoun

a parallelogram with four right angles

Parallelogram

In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.

Rectanglenoun

a plane figure with four straight sides and four right angles, especially one with unequal adjacent sides, in contrast to a square.

Rectangle

In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as: an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°); or a parallelogram containing a right angle.

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