What is the order of rotational symmetry if minimum angle of rotation is 90° ?

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Solution

The correct option is D 4
We know that $O r d e r o f r o t a t i o n a l s y m m e t r y = \frac{360^{0}}{M i n i m u m a n g l e o f r o t a t i o n}$ Given Minimum angle of rotation = 90°.

Therefore, order of rotational symmetry = $\frac{360^{0}}{90^{0}} = 4$
The correct answer is 4.

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