right angle

noun

: the angle bounded by two lines perpendicular to each other : an angle of 90° or ½ 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This is a detail that maybe 20 people in the theater have the right angle to see. Dewayne Bevil, The Orlando Sentinel, 15 Apr. 2026 What followed was a wide-eyed stare into the wrong camera that, once the crew found the right angle, devolved into an unsettling mog. Kennedy French, Variety, 12 Apr. 2026 O’Neal picked this particular booth – a worn wooden pew of stark right angles, second on the left – to be his workspace a few weeks earlier. Courtney Crowder, USA Today, 10 Apr. 2026 Grid cleaning is common as a deep-cleaning option where the robot first cleans an area in one direction, then at right angles, to really get at stains or pile. Bestreviews, Mercury News, 16 Mar. 2026 See All Example Sentences for right angle

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

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Cite this Entry

“Right angle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/right%20angle. Accessed 19 Apr. 2026.

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

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