Question

which angle of rotation is an angle of rotational symmetry for all figures? 180° 90° 45° 360°

Explanation:

Step1: Understand rotational symmetry

Rotational symmetry: figure same after rotation < 360°.

Step2: Analyze 360° rotation

Any figure rotated 360° maps to itself.

Step3: Check other angles

90°, 180°, 45° don't work for all (e.g., scalene triangle).

Answer:

360°