Definitions for: Parallelogram

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

Webster (1913) Definition: Par`al*lel"o*gram, n. [Gr. ?; ? parallel + ? to
write: cf. F. parall['e]logramme. See Parallel, and
-gram.] (Geom.)
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.

Parallelogram of velocities, forces, accelerations,
momenta, etc. (Mech.), a parallelogram the diagonal of
which represents the resultant of two velocities, forces,
accelerations, momenta, etc., both in quantity and
direction, when the velocities, forces, accelerations,
momenta, etc., are represented in quantity and direction
by the two adjacent sides of the parallelogram.

Antonyms: trapezium

See Also: quadrangle, quadrilateral, rectangle, rhomb, rhomboid, rhombus, tetragon

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