Explanation: Shapes with rotational symmetry have the property of looking the same after being rotated a degree smaller than 360.
Although this shape in the image does have symmetry, it does not have rotational symmetry because there is no way for it to look the exact same after being rotated.
This is correct because if you divide 221 by 6 you get 36 the subtract 5 from 36 and get 31. To check this answer just do 31+5=36 times 6 which is 216 and 221 minus 5 is 216:)