How do pyramid circle and ad hoc structure differ from each other?

Pyramid, circle, and ad hoc structures represent different organizational frameworks. A pyramid structure features a clear hierarchy with a top-down approach, where authority and decision-making flow from the top levels to the bottom. In contrast, a circle structure emphasizes equality and collaboration, allowing for more fluid communication among all members. An ad hoc structure is temporary and formed for a specific purpose, often lacking a fixed hierarchy, with teams assembled to address particular tasks or projects.