What numbers from 0 to 9 have rotational symmetry?

Numbers that have rotational symmetry are those that look the same after being rotated by certain angles. In the case of single-digit numbers, the numbers 0, 1, and 8 have rotational symmetry. When rotated 180 degrees, 0 and 8 look the same, and when rotated 90 degrees, 1 looks the same. Numbers like 2, 5, and 6 do not have rotational symmetry as they look different when rotated.