right angle

noun

: the angle bounded by two lines perpendicular to each other : an angle of 90° or ¹/₂ π radians
right-angled adjective
or right-angle

Examples of right angle in a Sentence

A square has four right angles. Hold the nail at a right angle to the board. The two boards are joined at right angles to each other.
Recent Examples on the Web One Woman's Travels Inspired This Must-See Art Museum Ema Peter/Boston Logan International Airport There are no right angles in the new terminal, and ample seating is available throughout. Jessica Puckett, Condé Nast Traveler, 5 Dec. 2023 There are no right angles in the new terminal, and ample seating is available throughout. Jessica Puckett, Condé Nast Traveler, 5 Dec. 2023 Start with a trajectory that’s at a right angle to the hypotenuse (the long side of the triangle). Quanta Magazine, 15 Feb. 2024 The boards weren’t measured and cut to fit at nice, neat right angles. IEEE Spectrum, 1 Feb. 2024 Carmen’s back and neck are perpetually bent at a right angle, her left shoulder humping up cockeyed thanks to years of untreated scoliosis. Lisa Bubert, Longreads, 27 Feb. 2024 Your trekking pole should be tall enough so that when positioned in front of you, your elbows bend at a right angle. Lindsey Lapointe, Field & Stream, 4 Jan. 2024 When Tom Cruise runs in movies, his arms slice rapidly through the air, elbows locked at a sharp right angle, fingers spread wide. Lane Florsheim, WSJ, 13 July 2023 With not a single right angle built into the architecture, Weird Barbie’s house is designed to look a bit squashed. Kelly Allen, House Beautiful, 21 July 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'right angle.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of right angle was in the 15th century

Dictionary Entries Near right angle

Cite this Entry

“Right angle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/right%20angle. Accessed 21 May. 2024.

Kids Definition

right angle

noun
: an angle whose measure is 90° : an angle whose sides are perpendicular to each other
right-angled
ˈrīt-ˈaŋ-gəld
adjective
or right-angle
-gəl

More from Merriam-Webster on right angle

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!