Final answer:
Preferred shapes for columns, like squares and circles, evenly distribute load through a round cross-section, providing stability and uniform stress distribution in structures.
Step-by-step explanation:
Squares and circles are preferred shapes for columns because the load can be transmitted more equally around a round cross-section. The round cross-section, unlike hexagonal, octagonal, or triangular bases, allows for uniform distribution of stress throughout the column. In the realm of architecture and structural engineering, this distribution is critical for maintaining the integrity and stability of a structure under load. The symmetrical nature of a circle ensures that forces are distributed evenly along all directions, minimizing the potential for stress concentrations that could lead to material failure.