Another kind of symmetry? What might we call this kind of symmetry? TOP Centre of rotation Rotational Symmetry

We say a shape has rotational symmetry if it fits exactly into itself when it is rotated. How many times does this shape fit into itself? TOP We say it has rotational symmetry of order 4

What happens if we move the centre of rotation? Do we still have rotational symmetry? TOP Centre of rotation TOP Do we now have rotational symmetry? No Yes

Does this shape have rotational symmetry? What is the order of rotation? TOP 2 We call this half turn symmetry.

Creating shapes with rotational symmetry We want this shape to have rotational symmetry order 2 TOP

Creating shapes with rotational symmetry TOP We say this shape has quarter turn symmetry. We want this shape to have rotational symmetry of order 4.