obtuse angle

American  

noun

1. an angle greater than 90° but less than 180°.

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obtuse angle Scientific  

/ ŏb-to̅o̅s′ /

1. An angle whose measure is between 90° and 180°.

2. Compare acute angle

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obtuse angle Cultural  

1. An angle that measures more than 90 degrees but less than 180 degrees. (Compare acute angle and right angle.)

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Other Word Forms

• obtuse-angled adjective
• obtuse-angular adjective

Etymology

Origin of obtuse angle

First recorded in 1560–70

Example Sentences

“You have a more obtuse angle between your forehead and your nose here,” he said, smoothing a finger between the middle of his brows.

From The Guardian • Nov. 10, 2020

However, in the diagram, angle appears to be an obtuse angle and may be greater than 90°.

From Textbooks • Feb. 13, 2015

Soccer-style kickers hold their foot at a more obtuse angle at the moment of impact, which means some of the leg’s energy is absorbed by the flexing ankle joint.

From Washington Post • Oct. 17, 2011

If you leave the bevel where it is, you will have an obtuse angle, which is not sharp enough to turn.

From Time Magazine Archive

An acute angle is, say, Professor Clifford; an obtuse angle, Mr. Whalley; a right angle, the present writer: non angeli sed Angli.

From Satires And Profanities by Foote, G. W. (George William)