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straight angle

noun

  1. the angle formed by two radii of a circle that are drawn to the extremities of an arc equal to one half of the circle; an angle of 180°.


straight angle

noun

  1. an angle of 180°
“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

straight angle

/ strāt /

  1. An angle having a measure of 180°.
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Word History and Origins

Origin of straight angle1

First recorded in 1595–1605
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Example Sentences

"I am not attracted to straight angles or to the straight line, hard and inflexible, created by man," he said famously.

I am not attracted to straight angles or to the straight line, hard and inflexible, created by man.

Welding Angle Iron.—Let it be required to form a piece of straight angle iron to a right angle.

It is very commonly taken as a postulate that all straight angles are equal, this being more evident to the senses, and the equality of right angles is deduced as a corollary.

“There wasn’t a straight angle in the whole building,” Mr. Easter said.

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straight and narrowstraight-arm