Question

A triangle can have at the most ____ right angle(s).

• A. 2
• B. 4
• C. 3
• D. 1

Answer 1

The correct option is D 1

The measure of a right angle is equal to ${90}^{\circ }$.

We know that, sum of interior angles in a triangle is equal to ${180}^{\circ }$.

If we have two right angles in a triangle, then the sum of interior angles in that triangle will be greater than ${180}^{\circ }$.

Hence, a triangle cannot have more than one right angle.