7. Can we have a rotational symmetry of order more than 1 whose angle of rotation is:
We can observe that the angle of rotation is the factor of ,then it will have rotational symmetry of order more than 1.
(i) is a factor of
so the figure having its angle of rotation as
will have rotational symmetry of order more than 1.
(ii) is not a factor of
so the figure having its angle of rotation as
will not have rotational symmetry of order more than 1.