Question

If one angle of a triangle is obtuse, then it cannot be a right angled triangle.(True/False)
a) True
b) False​

Answer 1

Answer:

A triangle cannot be right-angled and obtuse angled at the same time. Since a right-angled triangle has one right angle, the other two angles are acute. Therefore, an obtuse-angled triangle can never have a right angle; and vice versa.