Definitions

1. adjective

having a dull or blunted edge or point, or not sharp or quick in mind or wit; difficult to understand

“The professor’s obtuse response left many students confused.”

2. adjective

having an angle of less than 90 degrees

“The obtuse triangle in the math problem required careful calculation.”

3. noun

a triangle with an angle of more than 90 degrees

“The obtuse triangle was a challenging geometry problem.”