Question

The angles of a triangle measure ${40}^{\circ }$, ${110}^{\circ }$ and ${30}^{\circ }$. Such a triangle is called a/an _____.

• A. isosceles triangle
• B. right angled triangle
• C. obtuse angled triangle
• D. acute angled triangle

Answer 1

The correct option is C obtuse angled triangle

If an angle of a triangle is obtuse (more than ${90}^{\circ }$), the triangle is called an obtuse angled triangle.

Since the measure of one of the angle of the given triangle = ${110}^{\circ }$, it is an obtuse angled triangle.