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Rectangle

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rec⋅tan⋅gle

[rek-tang-guhl]
–noun
a parallelogram having four right angles.

Origin:
1565–75; < ML rēctangulum, LL rēctiangulum right-angled triangle (n. use of neut. of rēctiangulus having a right angle), equiv. to rēcti- recti- + angulum angle 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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rec·tan·gle   (rěk'tāng'gəl)   
n.  A four-sided plane figure with four right angles.

[French, from Medieval Latin rēctangulum, a right triangle, from Late Latin rēctiangulum : Latin rēctus, right; see reg- in Indo-European roots + Latin angulus, angle.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

rectangle 
1571, from M.Fr. rectangle, from rect-, comb. form of L. rectus "right" + O.Fr. angle (see angle). M.L. rectangulum meant "a triangle having a right angle" (7c.).
Online Etymology Dictionary, © 2001 Douglas Harper
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Financial Dictionary

rectangle

In technical analysis, a chart pattern in which the price of a security bounces back and forth between two horizontal lines. Because a rectangle is thought to occur when stock is being distributed or accumulated by knowledgeable investors, a major price movement is expected once the stock breaks out of the rectangle formation.

Wall Street Words: An A to Z Guide to Investment Terms by David L. Scott.
Copyright © 2003. Published by Houghton Mifflin.
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