Which type of balance involves equal visual weight on both sides of a design?

The type of balance that involves equal visual weight on both sides of a design is symmetrical balance. Symmetrical balance creates a mirror image effect where both sides of the arrangement are identical or very similar, leading to a sense of harmony and stability. This balance is often used in traditional designs, where objects on either side of a central axis are arranged to look almost the same in terms of shape, size, color, or texture.

Symmetrical balance is particularly effective in floral arrangements as it evokes a sense of formality and order. For instance, when creating a bouquet or centerpiece, placing flowers and elements evenly on both sides enhances the visual appeal and creates a cohesive look. This approach appeals to our innate desire for structure and can evoke feelings of tranquility and peace in the viewer.

In contrast, other types of balance like asymmetrical balance, which involves different elements that create a sense of balance through contrast; radial balance, which radiates out from a central point; and informal balance, which is less structured, do not adhere to the principle of equal visual weight on both sides. Each of these alternative forms serves different design purposes but does not achieve the same effect of symmetry found in symmetrical balance.