Question

Identify the type of triangle.

• A. Acute triangle
• B. Right triangle
• C. Obtuse triangle
• D. Equilateral triangle

Answer 1

The correct option is C Obtuse triangle

An angle that measures greater than ${90}^{\circ }$ and less than ${180}^{\circ }$ is called an obtuse angle.

A triangle with an obtuse angle is called an obtuse triangle.

Since ${120}^{\circ }$ is an obtuse angle, the triangle must be obtuse.