Question

which triangle has an obtuse angle?

Explanation:

Step1: Recall obtuse - angle definition

An obtuse angle is greater than 90° and less than 180°.

Step2: Examine each triangle

Look for a triangle with an angle wider than a right - angle.

Answer:

The triangle with an angle wider than a right - angle among the options. (Since no specific triangle is marked, this is a general way to identify the answer.)