straight angle

American

noun

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 British

noun

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 Scientific

/ strāt /

An angle having a measure of 180°.

Etymology

Origin of straight angle

First recorded in 1595–1605

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

From The Guardian

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

From The Guardian

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

From Project Gutenberg

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.

From Project Gutenberg

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

From New York Times

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023