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right triangle

noun
1.
a triangle having a right angle (contrasted with oblique triangle).
Origin of right triangle
1920-1925
1920-25
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for right triangle
Historical Examples
  • The area of a right triangle is 150 square feet, and its hypotenuse is 25 feet.

    A Review of Algebra Romeyn Henry Rivenburg
  • Think how you can get a right triangle from a right tri-prism.

  • Man's successful responses to novel data—as when he argues that the diagonal on a right triangle of 796.278 mm.

    The Psychology of Arithmetic Edward L. Thorndike
  • In place of "right-angled triangle" modern writers speak of "right triangle," and so for the obtuse and acute triangles.

    The Teaching of Geometry David Eugene Smith
  • One of the drawings on this page is called a right triangle.

  • We may put the word defined at the end, thus: "A triangle that has one of its angles a right angle is called a right triangle."

    The Teaching of Geometry David Eugene Smith
  • For example, suppose we say that "a triangle that has one of its angles a right angle is a right triangle."

    The Teaching of Geometry David Eugene Smith
  • The square on the hypotenuse of a right triangle is equivalent to the sum of the squares on the other two sides.

    The Teaching of Geometry David Eugene Smith
  • If a right triangle equicrurall to a triangle be greater in base, it is greater in angle: And contrariwise.

    The Way To Geometry Peter Ramus
  • When she comes to the solution of the right triangle, the baseball diamond does not come to her mind.

    The Vitalized School Francis B. Pearson
British Dictionary definitions for right triangle

right triangle

noun
1.
(US & Canadian) a triangle one angle of which is a right angle Also called (in Britain and certain other countries) right-angled triangle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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right triangle in Science
right triangle  
A triangle having a right angle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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right triangle in Culture

right triangle definition


A triangle that contains a right angle.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Difficulty index for right triangle

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Word Value for right

9
9
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