Which type of balance is characterized by equal visual weight on both sides of a center line?

The type of balance characterized by equal visual weight on both sides of a center line is known as symmetrical balance. This balance creates a sense of harmony and stability, as both sides mirror each other in composition, color, and size. In floral design, this might manifest as identical arrangements or colors placed in a way that they reflect each other around a central point, promoting a coherent and organized appearance. Symmetrical balance is often used in traditional styles of arrangement where formality is intended, conveying elegance and order.

In contrast, the other types of balance—such as asymmetrical, radial, and proportional balance—do not maintain this exact mirroring aspect. Asymmetrical balance achieves visual equilibrium with different elements that are not identical but still manage to achieve a balance of visual weight. Radial balance revolves around a central point with elements radiating outward, creating a circular effect. Proportional balance refers to the size relationships between elements rather than their placement around a center line. Each of these balances serves different aesthetic purposes, but for this particular definition and characteristic, symmetrical balance is the appropriate answer.