Question

the figure below has rotational symmetry. ° is the smallest possible rotation that results in the figure being mapped onto itself.

Explanation:

Step1: Determine the number of equal - parts

The figure can be divided into 4 equal - parts around the center.

Step2: Calculate the angle of rotation

The full - circle is 360°. To find the smallest rotation angle that maps the figure onto itself, we divide 360° by the number of equal - parts. So, the angle $\theta=\frac{360^{\circ}}{4}$.

Answer:

90