Lastly, a figure in a plane has rotational symmetry if the figure can be mapped onto itself by a rotation of 180° or less. Clockwise rotations are also referred to as negative counterclockwise rotations. This means that if we turn an object 180° or less, the new image will look the same as the original preimage. And when describing rotational symmetry, it is always helpful to identify the order of rotations and the magnitude of rotations.Ī clockwise rotation of 90 is also a counterclockwise rotation of -90.
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