What characteristic describes symmetry in objects?

The characteristic that describes symmetry in objects is the mirroring of opposite sides. In geometric terms, symmetry refers to a balanced and proportionate similarity between two halves of an object that can be divided along a central axis. When an object has symmetry, one side is a mirror image of the other. This quality is often used in design, architecture, and various artistic expressions to create aesthetically pleasing structures and forms.

For example, a butterfly exhibits symmetry; if you draw a line down its middle, the left and right wings reflect one another in shape, color, and size. This property is fundamental in understanding how certain forces act on objects and helps in predicting how they will behave under various circumstances in rigging and hoisting practices.

The other characteristics, such as reflection of sound, uniform thickness, and consistent density, do not inherently describe symmetry but refer to different properties of materials or phenomena. While they can play roles in specific contexts, they do not define the symmetrical nature of an object.