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right triangle

noun
1.
a triangle having a right angle (contrasted with oblique triangle).
Origin of right triangle
1920-1925
First recorded in 1920-25
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for right triangle
Historical Examples
• One of the drawings on this page is called a right triangle.

Hugo B. Froehlich
• Think how you can get a right triangle from a right tri-prism.

Hugo B. Froehlich
• The area of a right triangle is 150 square feet, and its hypotenuse is 25 feet.

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

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

David Eugene Smith
• 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."

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

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.

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

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

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
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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.
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Difficulty index for right triangle

Few English speakers likely know this word

Word Value for right

9
9
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