Triangle ABC is a perfect example to study the triangle type – Obtuse. In triangle ABC, interior angle ACB =37°, which is less than 90°, so it's an acute angle. Interior angle ABC = 96°, which is more than 90° so, it's an obtuse angle.
Is a triangle an obtuse angle?
No, a triangle cannot have both obtuse and right angles, as the sum of the three angles cannot exceed 180 degrees. How do you know if a triangle is obtuse? We can easily identify an obtuse triangle by looking at its angles. If any angle measures more than 90°, that triangle is an obtuse triangle.