Which capital letters, if any, have rotational symmetry? Identify the angle of rotation for each.

The capital letters A, H, I, M, O, T, U, V, W, X, and Y have rotational symmetry. The angle of rotation for these letters is either 180 degrees (for A, H, I, M, T, U, V, W, X, and Y) or 360 degrees (for O).