Why is the cell cycle represented by pie graph or circle?

The cell cycle is often represented by a pie graph or circle to illustrate its continuous and cyclical nature. Each segment of the circle corresponds to a specific phase—such as G1, S, G2, and M—highlighting how these phases are interconnected and occur in a repeated sequence. This visual representation emphasizes the progression and balance of activities within the cycle, making it easier to understand the dynamic processes of cell division and growth.