Question

Don't know how to solve this question exactly i need help

what is the least number of degrees you could rotate a square around its center so that it appears to be unchanged?.​

Answer 1

90°

Explanation:

If you rotate a square about its axis, in 90°, 180°, 270°, 360°, ... degrees, it looks to be the same.

Answer 2

Does a square have rotation symmetry? Yes, a square can be rotated \begin{align*}90^\circ\end{align*} counterclockwise (or clockwise) about its center and the image will be indistinguishable from the original square.

Explanation: