Question

what is rotational symmetry

Answer 1

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$rotational \: symmetry$
The angle of rotational symmetry is the smallest angle .It looks same even if it is rotated.

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Answer 2

Answer:

Any object or shape is said to have rotational symmetry if it looks exactly the same at least once during a complete rotation through three hundred and sixty degrees. In a full turn, there are precisely four positions (on rotation through the angles 90°, 180°, 270° and 360°) when the windmill looks exactly the same