Mathematics for IGCSE & O level - Symmetry (Section 3 - No. 12)
What does rotational symmetry of order 1 mean?
The shape fits onto itself once in one complete turn
The shape fits onto itself twice in one complete turn
The shape does not have rotational symmetry
The shape has one line of symmetry
Пояснення
Rotational symmetry of order 1 means the shape fits onto itself once in one complete turn.