Obtuse Triangle Definition and Visual Example #56584 (License: Personal Use)

This black-and-white line drawing depicts a scalene obtuse triangle, where the top interior angle is visibly greater than 90 degrees, satisfying the definition of an obtuse triangle. The label “Obtuse.” beneath the figure confirms its classification, and the sketch style suggests an educational or historical textbook origin. The simplicity emphasizes geometric form over artistic detail.

Used in math education resources, geometry lessons, or online encyclopedias to visually define obtuse triangles; matches user intent for learning basic triangle classifications or verifying visual examples.