What does "Rotational symmetry of order 2" mean?

Question

The answer to the question "Describe the symmetry properties of a parallelogram" was "Rotational symmetry of order 2", what does it mean?

Answer 1

It means that if you rotate it how many times will the shape be idnetical to the original shape thrrough 360 degrees. A parallelogram is identical when rotated through 180 and 360 degrees so it has order 2

Answer 2

It means you can turn the parallelogram round, and it'll appear the same twice... that's at 180 degrees and 360 degrees.

I hope that helps. :)

me07.