Question

Richa measures angles of the triangle as ${110}^{\circ }$, ${40}^{\circ }$, and ${30}^{\circ }$. What type of triangle is measured by Richa?

• A. acute-angled triangle
• B. right-angled triangle
• C. obtuse-angled triangle
• D. Isosceles triangle

Answer 1

The correct option is C obtuse-angled triangle

Angles measured by Richa are ${110}^{\circ }$, ${40}^{\circ }$, and ${30}^{\circ }$.
As we can see, one of the interior angles of the triangle is more than ${90}^{\circ },i.e.,{110}^{\circ }$.

So, we can say that it is an obtuse-angled triangle.