If the angle of rotation of an object is $72 °$ , find the order of rotational symmetry of that object.

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Solution

We know that if the angle of rotation is $x °$ then the order of rotational symmetry will be = $\frac{360 °}{x °}$
As we have been given the angle of rotation is $72 °$ ,
The order of rotational symmetry = $\frac{360 °}{72 °}$
The order of rotational symmetry = $5$
Hence, hence the order of rotational symmetry is $5$ .

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