A rectangle can be rotated about its centre by half a turn. The result looks exactly like the original rectangle. We call this rotational symmetry.
A tracing of this star fits the star in exactly five different ways.
We say that the star has rotational symmetry of order 5.
If a shape only fits into itself once, it has no rotational symmetry.
Look at these shapes. How many orders of rotational symmetry do they have?
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