Mathematics for IGCSE & O level - Symmetry (Section 2 - No. 2)
What can you say about the rotational symmetry of a shape with a rotational symmetry of order 1?
It does not have rotational symmetry.
It is the same as the original shape in only one position during a complete turn.
It has one line of symmetry.
It has two lines of symmetry.
Explanation
A shape with a rotational symmetry of order 1 fits onto itself only once in a complete turn.
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