obtuse angle

noun

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

obtuse angle

/ ŏb-to̅o̅s′ /

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

obtuse angle

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

Other Words From

• ob·tuse-angled ob·tuse-an·gu·lar [uh, b-, toos, -, ang, -gy, uh, -ler, -, tyoos], adjective

Word History and Origins

Origin of obtuse angle¹

First recorded in 1560–70

Example Sentences

His bandmates followed him, but after just a few moments, they were all back, with de la Rocha planted on a monitor on the right of the stage, his left leg stuck at an obtuse angle.

From New York Times

“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

In 2018, a math teacher at Friends Seminary, a private Quaker school in downtown Manhattan, was fired after he demonstrated an obtuse angle by pointing his arm forward and saying, “Heil Hitler.”

From New York Times

In math I spent the entire time thinking about how Momly's arm was probably at an obtuse angle when it broke.

From Literature

Pulisic’s finish, from an awkward, wildly obtuse angle to the right of goal, skimmed into the net.

From New York Times