Question

Identify the type of triangle whose angles are ${40}^{\circ },$ ${30}^{\circ }$ and ${110}^{\circ }.$

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

Answer 1

The correct option is C Obtuse triangle

A triangle that has an obtuse angle is called an obtuse triangle.

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

Since ${110}^{\circ }$ is an obtuse angle, the triangle is obtuse.