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°

straight angle

1. An angle having a measure of 180°.

Word History and Origins

Origin of straight angle¹

First recorded in 1595–1605

Example Sentences

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

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

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

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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.

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

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