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obtuse angle

American  

noun

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

obtuse angle Scientific  
/ ŏb-to̅o̅s′ /

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

  2. Compare acute angle

obtuse angle Cultural  

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

Other Word Forms

Etymology

Origin of obtuse angle

First recorded in 1560–70

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.