right angle
the angle formed by two radii of a circle that are drawn to the extremities of an arc equal to one quarter of the circle; the angle formed by two perpendicular lines that intersect; an angle of 90°.
Origin of right angle
1Other words from right angle
- right-angled, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use right angle in a sentence
Figure 61 represents a right-angled triangle, A and B forming a right angle.
Mechanical Drawing Self-Taught | Joshua RoseIt held one arm akimbo, and the other raised, right-angled, holding a fan which touched its head.
The Forsyte Saga, Volume III. | John GalsworthyRec′tangled, having right angles; Rectang′ūlar, right-angled.
The graceful pride of truth knows no extremes, and preserves, in every latitude of life, the right-angled character of man.
The Writings of Thomas Paine, Volume II | Thomas PaineThe caon is sharply cleft in trap rock, and the sides rise sheer and pilastered as though cut into right-angled pillars.
In to the Yukon | William Seymour Edwards
British Dictionary definitions for right angle
the angle between two radii of a circle that cut off on the circumference an arc equal in length to one quarter of the circumference; an angle of 90° or π/2 radians
at right angles perpendicular or perpendicularly
Other words from right angle
- Related adjective: orthogonal
Derived forms of right angle
- right-angled, adjective
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
Scientific definitions for right angle
[ rīt ]
An angle having a measure of 90°.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for right angle
An angle measuring ninety degrees, formed by the intersection of two perpendicular lines. (Compare acute angle and obtuse angle.)
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Browse