What does the rectangle shape represent in a flow diagram?

In a flow diagram, the rectangle shape is used to represent processes. This includes any action or task that needs to be completed within the sequence outlined by the flowchart. Each rectangle indicates a specific step or operation such as calculations, data processing, or any other activity that transforms input into output.

This is a fundamental convention in flowcharting, where the graphical elements are standardized to provide a clear and understandable way of visualizing complex systems or workflows. By using rectangles for processes, anyone reading the diagram can quickly identify where actions are taking place within the workflow, making it easier to follow the logic of the system being represented.

In contrast, other shapes in flow diagrams serve different purposes: diamonds typically represent decisions, ovals signify the start or stop of the process, and parallelograms denote inputs or outputs. Each shape has its distinct meaning, allowing for effective communication of the processes involved.