Generally speaking, an object with rotational symmetry, also known in biological contexts as radial symmetry, is an object that looks the same after a certain amount of rotation. An object may have more than one rotational symmetry; for instance, if reflections or turning it over are not counted. The degree of rotational symmetry is how many degrees the shape has to be turned to look the same on a different side or vertex. It can not be the same side or vertex.

Einstein 1921 by F Schmutzer
Unfortunately, Albert Einstien is confused. If you don't want to get confused add more information to Math Geek Net by not making it a stub by expanding Rotational symmetry.

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