Step 1: Understanding the Angles of a Square.
A square is a quadrilateral with four equal sides and four right angles. The measure of each angle in a square is always 90°. This is because the angles in any rectangle or square are right angles.
Step 2: Verifying the Options.
- Option (1): 60° is the measure of an acute angle, not the angle in a square.
- Option (2): Each angle in a square is 90°, making this the correct answer.
- Option (3): 45° is the measure of an acute angle, not the angle in a square.
- Option (4): 180° is the measure of a straight angle, not the angle in a square.
Conclusion:
Therefore, the correct answer is (2) 90°.