What is an example of point symmetry?

Point symmetry occurs when a shape or object can be rotated 180 degrees around a central point and appears unchanged. In this case, turning an object upside down and having it remain the same demonstrates this concept perfectly.

For example, if you take the letter "S" and rotate it 180 degrees around its center point, the orientation and appearance of the letter do not change. This illustrates point symmetry because the object looks identical after being flipped.

The other options represent different types of symmetry or transformations. Rotating a shape does not necessarily mean it will remain identical unless specific conditions are met, such as having a rotational symmetry. Reflecting over an axis produces mirror imagery rather than a counterpart on the opposite side of a point. Scaling an object changes its size but does not maintain the same proportions after being flipped or rotated. Thus, the point symmetry demonstrated in the turning upside down scenario highlights why it is the correct choice.