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 \ or right-angle \ˈrīt-ˈaŋ-gəl \ 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

But Rizzo’s leg clipped the right angle of Pirates catcher Elias Diaz, whose throw to first base sailed into right field and allowed two runs to score. Mark Gonzales, chicagotribune.com, "Official review determines Cubs' Anthony Rizzo guilty of interference," 29 May 2018 Tidy right angles abound, from the white metal struts that form a procession of columns, to the rectangular teller windows lining the room’s perimeter. Janelle Zara, WSJ, "A Masterpiece of Modernist Architecture? I Had My Doubts," 16 Mar. 2018 Pull the sponge lightly across each right angle once. The Editors Of House Beautiful, House Beautiful, "How to Grout Tile," 11 Feb. 2015 Bends’ in Pier The wings are not at right angles to the main pier. sandiegouniontribune.com, "July 2, 1966: Ocean Beach Pier Dedicated," 2 July 2018 Houses are all about right angles; pottery adds shapes and curves. Lisa Cregan, House Beautiful, "Gregory Shano on Decorating His Relaxed Long Island Retreat," 30 Mar. 2015 His theorem, a part of Euclidean geometry taught in many high school math classes, states that the hypotenuse of a right triangle (the side opposite the right angle) equals the sum of the squares of the other two sides. Kevin Kelleher, Fortune, "Stonehenge Builders Used Pythagoras' Theorem Centuries Before His Birth, Say Experts," 21 June 2018 Earth’s rotational axis — the imaginary line through our planet’s center and the geographic north and south poles — isn’t exactly at a right angle to the path of its orbit around the sun. Tom Metcalfe /, NBC News, "What is the summer solstice?," 20 June 2018 Trying to move the soft silicone through pants and under a harness and getting the right angle and pressure without sacrificing the seal would be an experts-only outdoor peeing maneuver. Anna Callaghan, Outside Online, "Our Favorite Pee Funnels," 6 June 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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Phrases Related to right angle

right-angled triangle

Statistics for right angle

Last Updated

7 Oct 2018

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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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Comments on right angle

What made you want to look up right angle? Please tell us where you read or heard it (including the quote, if possible).


to reject or criticize sharply

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