Mathematics for IGCSE & O level - Symmetry (Section 1 - No. 27)
If a shape has rotational symmetry of order 1, what is true?
It does not have rotational symmetry.
It's always a square.
It coincides with itself only in one position in one complete turn.
It has one line of symmetry.
Explanation
A shape of order 1 has rotational symmetry.
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