The order of rotation and angle of rotation of a square respectively are:

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4 and

90 °

2 and

90 °

1 and

90 °

3 and

90 °

answer is A.

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Detailed Solution

Here, we have to find the order of rotation and angle of rotation of a square.
We know that the order of a regular polygon's rotational symmetry equals the number of sides and the angle of rotation should be,

A n g l e o f r o t a t i o n = 360 ° Order of a regular polygon

Since a square is a four-sided regular polygon, therefore the order of a square is also 4.
Thus, the angle of rotation of a square is,

⇒ A n g l e o f r o t a t i o n = 360 ° 4 ⇒ A n g l e o f r o t a t i o n = 90 °

Hence, the order of rotation and angle of rotation of a square respectively are 4 and

90 ° .

So, option (1) is correct.

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