Question

Choose the correct one from the following options.

• A.
• B.
• C.
• D. All are incorrect

Answer 1

The correct option is C

Option (A):


A right-angled triangle must have an angle that measures 90°.
In triangle ABC, none of the angles is equal to 90°.
So, this is not a right-angled triangle.

Option (B):


An obtuse-angled triangle must have an angle that measures more than 90°.
In triangle PQR, none of the angles is greater than 90°.
So, this is not an obtuse-angled triangle.

Option (C):


An acute-angled triangle must have all angles measuring less than 90°.
In triangle XYZ, all angles measure less than 90°.
So, this is an acute-angled triangle.

∴ Correct choice is Option (C).