Question

Angle AOB is ______.

विकल्प

• 60°

• 90°

• 45°

• none of these

Answer 1

Angle AOB is 90°.

Explanation:

Since the lengths of the sides satisfy the relation OA² + OB² = x² + x² = 2x², which equals AB², the converse of Pythagoras’ theorem confirms that ΔAOB is a right-angled triangle at vertex O. Hence, the angle AOB measures 90°.