
Definition of Parallelogram
1. Noun. A quadrilateral whose opposite sides are both parallel and equal in length.
Specialized synonyms: Diamond, Rhomb, Rhombus, Rhomboid, Rectangle
Antonyms: Trapezium
Definition of Parallelogram
1. n. A rightlined 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.
Definition of Parallelogram
1. Noun. (geometry) A convex quadrilateral in which each pair of opposite edges are parallel and of equal length. ¹
¹ Source: wiktionary.com
Definition of Parallelogram
1. [n S]
Medical Definition of Parallelogram
1.
Parallelogram Pictures
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Lexicographical Neighbors of Parallelogram
Literary usage of Parallelogram
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago by Robert Simson, Euclid (1838)
"and complete the parallelogram DG; and, taking any straight line K make (12. 6.)
as BC to CG, so K to L; and as DC to CE, so make (12. 6. ..."
2. An Introduction to Natural Philosophy: Designed as a Textbook, for the Use by Denison Olmsted (1854)
"In the case before us, the space described by a moving body is represented by a
parallelogram, not because the space actually described has any resemblance ..."
3. The Thirteen Books of Euclid's Elements by Euclid, Johan Ludvig Heiberg (1908)
"In I. 44 it was a question of "applying to a given straight line (exactly,
without 'excess' or 'defect') a parallelogram equal ..."
4. Elements of Geometry: Containing the First Six Books of Euclid, with a by John Playfair, William Wallace (1836)
"Let BC, CG be placed in a straight line; therefore DC and CE are also in a straight
line"; complete the parallelogram DG; and, taking any straight line K, ..."
5. American Edition of the British Encyclopedia: Or, Dictionary of Arts and ...by William Nicholson by William Nicholson (1819)
"The parallelogram No. 1, is rectangular: No. 2 ii inclined, so as to hang over
a space equal to the length ofits own base ; but the line A. B, ..."
6. A Treatise on Analytical Statics: With Numerous Examples by Edward John Routh (1896)
"parallelogram of Force*. To find the resultant of two forces acting at a given
... Let us now construct a parallelogram having OA, OB for two adjacent sides ..."
7. Theory of Functions of a Complex Variable by Andrew Russell Forsyth (1893)
"It is desirable to have the parallelogram, in which a doubly periodic ...
If in the parallelogram (supposed, for convenience, to have the origin for an ..."