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Four-sided figure
Answer for the clue "Four-sided figure ", 13 letters:
parallelogram
Alternative clues for the word parallelogram
Word definitions for parallelogram in dictionaries
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Parallelogram \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 ...
Wikipedia
Word definitions in Wikipedia
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. ...
Longman Dictionary of Contemporary English
Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ A hexagon, a cube; here comes a parallelogram . ▪ It is the envelope of a series of parallelograms of equal area and sharing two sides. ▪ Its profile was an irregular parallelogram , and it appeared to be made up of interlocking ...
Wiktionary
Word definitions in Wiktionary
n. (context geometry English) A convex quadrilateral in which each pair of opposite edges are parallel and of equal length.
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
1560s, from Middle French parallélogramme (1550s) and directly from Late Latin parallelogrammum , from Greek parallelogrammon noun use of neuter adjective meaning "bounded by parallel lines," from parallelos (see parallel ) + stem of graphein "to write" ...
WordNet
Word definitions in WordNet
n. a quadrilateral whose opposite sides are both parallel and equal in length [ant: trapezium ]
Usage examples of parallelogram.
By the aid of this axiom it easily follows that the diagonals of a parallelogram bisect each other.
The Parallelogram of Forces - its fallacious kinematic and its true dynamic interpretation.
The conviction of the applicability of mathematical concepts to the description of natural events is grounded in his discovery of the so-called Parallelogram of Forces.
So in the theorem of the Parallelogram of Velocities we have a strictly geometrical theorem, whose content is in the narrowest sense kinematic.
Thus accelerated movements and movements under constant velocity can be resolved and combined according to the law of the parallelogram of movements, a law which is fully attainable by means of logical thought.
At the same time it forbids the use of this equation for a logical derivation of the parallelogram of forces from that of pure velocities.
Whence came this intuition, as well as the other which led him to recognize from the figures thus obtained that in a parallelogram made up of any two of the three lines, the remaining line came in as its diagonal?
In this way the parallelogram of forces becomes an inner experience of our organism at the beginning of our earthly life.
Instead of the parallelogram of forces following from the parallelogram of movements, and the entire science of dynamics from that of kinematics, our very faculty of thinking in kinematic concepts is the evolutionary product of our previously acquired intuitive experience of the dynamic order of the world.
As such a personality, Galileo was able to think the parallelogram of forces, but he was unable to comprehend the origin of his faculty of mathematical thinking, or of his intuitive knowledge of the mathematical behaviour of nature in that realm of hers where she sets physical forces into action.
Kepler-Newton case on the very lines of our treatment of the two parallelogram theorems.
In this assertion we encounter a misconception exactly like the one in the statement that the theorem of the parallelogram of forces follows by logical necessity from the theorem of the parallelogram of velocities.
She stopped in the shadows, well away from the pale parallelogram of streetlight thrown carelessly across the uncarpeted floor.
Here lie the principal ruins, forming a rude parallelogram from north-east to south-west.
The John Hancock Tower rose above the square, an enormous parallelogram, its sides shimmering with the reflected light of the afternoon.