What type of symmetry is referred to when there is a bilateral division of elements?

The concept of bilateral symmetry refers to a symmetrical arrangement that can be divided into two identical halves along a central axis. This type of symmetry is characterized by balanced proportions on either side of the dividing line. When discussing symmetry in artistic and design contexts, bilateral symmetry is often best described by the term "absolute symmetry," which signifies that both sides are mirror images of each other.

In contrast, asymmetrical balance refers to a design that does not rely on mirrored elements but still achieves a sense of balance through various visual weights and arrangements. Radial symmetry radiates outward from a central point, like the petals of a flower, rather than dividing along a single axis. Not exact symmetry implies that while some elements may match visually, they do not adhere to the uniform, mirror-like quality seen in absolute symmetry.

Thus, the correct answer links directly to the principle of having a clear division that reflects visual harmony along a central axis of symmetry, aligning closely with the notion of absolute symmetry rather than suggesting a lack of precision, as indicated by the term 'not exact symmetry.'