acute angle
noun
plural acute angles
mathematics
: an angle (see angle entry 1 sense 1a) measuring greater than 0 degrees and less than 90 degrees
New England's highway engineers embraced the rotary as the replacement for centuries-old … sites where many roads combined at odd, often acute angles.—
John R. Stilgoe
John R. Stilgoe[Tennis player Naomi] Osaka crashes a shot into the net but comes back with two forehand winners, the second from an acute angle nearly around the net, to move within a game of victory.—The Guardian (London)
The Guardian (London)Inspect your tree for limbs that branch from the central leader either too sharply upward, forming an acute angle, or at too wide an angle.—Carol Savonen
compare obtuse angle, right angle
Carol SavonenExamples of acute angle in a Sentence
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Most prominently was Hugh Hayden’s permanent new sculpture, a functioning chapel that ingeniously bends at an acute angle.
—Nate Freeman, Vanity Fair, 8 May 2026
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Nate Freeman, Vanity Fair, 8 May 2026
Cite this Entry
“Acute angle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acute%20angle. Accessed 21 May. 2026.
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