Identify shapes that map onto themselves when turned through a given angle in a circle about a suitable point. Define rotational symmetry, centre of symmetry, angle of rotation, and order of rotational symmetry. Identify geometric figures and common shapes that possess rotational symmetry. Identify the centre of symmetry, angle of symmetry and order of rotational symmetry for a given shape. Classify shapes based on whether they possess line symmetry and rotational symmetry. Describe the symmetry properties of a circle.