If a fan has rotational symmetry of order 4, how many blades does it have?

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Solution

The correct option is C
4

If a fan has rotational symmetry of order 4, that means the fan looks exactly as it was before the rotation at four instances.
This can only happen when it has four blades.

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If a fan has rotational symmetry of order 4, how many blades does it have?

The correct option is C 4 If a fan has rotational symmetry of order 4, that means the fan looks exactly as it was before the rotation at four instances. This can only happen when it has four blades.

The correct option is C
4

If a fan has rotational symmetry of order 4, that means the fan looks exactly as it was before the rotation at four instances.
This can only happen when it has four blades.