A) \[{{21}^{o}}\]
B) \[{{22}^{o}}\]
C) \[{{23}^{o}}\]
D) \[{{24}^{o}}\]
Correct Answer: D
Solution :
If angle of rotation is a factor of \[{{360}^{o}}\]then the figure has a rotational symmetry of order more than 1.
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