Question

Akanchha measured the angles in a triangle. They came out to be ${60}^{\circ },{80}^{\circ }$, and ${70}^{\circ }$ respectively. Now she wants to know what type of triangle it is.
Can you tell what type of triangle it is?

• A. Acute angled triangle
• B. Obtuse angled triangle
• C. Right angled triangle
• D. Reflex angled triangle

Answer 1

The correct option is D

Reflex angled triangle

The sum of angles of a triangle measured by Akanchha turns out to be ${60}^{\circ }+{80}^{\circ }+{70}^{\circ }={210}^{\circ }$, which is impossible for the existence of a triangle since the sum of angles of a triangle cannot be greater than ${180}^{\circ }$. Hence, she made a mistake.