right angle


Definition of right angle

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

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Other Words from right angle

right-angled \ ˈrīt-​ˈaŋ-​gəld How to pronounce right-angled (audio) \ or right-angle \ ˈrīt-​ˈaŋ-​gəl How to pronounce right-angle (audio) \ adjective

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.
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Recent Examples on the Web

Phillips, who died last month, had volunteered his agency to boost the city’s reputation, but hadn’t found the right angle. Ken Roman, WSJ, "The Man Behind ‘the Big Apple’," 27 Jan. 2019 The phenomenon has more in common with dust storms: a gust of hot air blows through the fire at the right angle and creates a spinning momentum. David Grossman, Popular Mechanics, "What Is a Fire Tornado?," 3 Aug. 2018 Montpellier midfielder Florent Mollet equalized in the 31st with a free kick from the right angle of the penalty area which looked to have been saved by goalkeeper Gianluigi Buffon. Jerome Pugmire, The Seattle Times, "Mbappe scores 20th league goal as PSG routs Montpellier 5-1," 20 Feb. 2019 That’s not the case for HD 98800, where the disk of dust and gas is at a right angle to the stars in the center. Avery Thompson, Popular Mechanics, "Astronomers Discover Bizarre Quadruple Star System," 15 Jan. 2019 Instead of the standard 90-degree angles found in many houses, the building uses the parallelogram shape and features a single right angle in its design. Megan Barber, Curbed, "Frank Lloyd Wright-inspired ‘parallelogram’ house asks $560K," 3 Dec. 2018 The air molecules are always hitting it at near-perfect right angles, so the vessel must bear the full brunt of the impact. Jennifer Ouellette, Ars Technica, "The math of why it’s so hard to build a spherical Death Star in space," 18 Sep. 2018 My limbs, legs and foot, frozen, exhaling softly to keep the right angle, while a photo assistant adjusts a strap on my shoe, or the photographer directs me to move my foot an inch this way or that. Isobella Jade, SELF, "Carrying My Father's Memory, and His Coffee Cup," 18 Oct. 2018 Grab bars from Kohler’s Purist line, set at right angles that aesthetically underline the room’s linearity, are never out of reach. Sara Bliss, WSJ, "Renovation Strategies to Live at Home—Stylishly—Into Your 80s," 23 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'right angle.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of right angle

15th century, in the meaning defined above

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Last Updated

11 Mar 2019

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Time Traveler for right angle

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

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More Definitions for right angle

right angle


English Language Learners Definition of right angle

: an angle formed by two lines that are perpendicular to each other : an angle that measures 90°

right angle


Kids Definition of right angle

: an angle formed by two lines that are perpendicular to each other : an angle of 90 degrees

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More from Merriam-Webster on right angle

Rhyming Dictionary: Words that rhyme with right angle

Spanish Central: Translation of right angle

Nglish: Translation of right angle for Spanish Speakers

Britannica English: Translation of right angle for Arabic Speakers

Britannica.com: Encyclopedia article about right angle

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