Rotation symmetry is when a figure looks the same after being rotated by a certain angle around a fixed center point.
A figure has rotation symmetry when it looks the same after being rotated by a certain angle around a fixed center point.
The rotation symmetry of a figure can be determined by identifying the angles at which the figure looks unchanged.
For example, a square has rotation symmetry of 90 degrees because it looks the same after being rotated by 90 degrees, 180 degrees, or 270 degrees.
On the other hand, a triangle does not have rotation symmetry because it looks different after being rotated by any angle other than 0 degrees or 360 degrees.