What shape represents a decision in flowcharting?

In flowcharting, a diamond shape is used to represent a decision point. This shape is appropriate because it visually indicates that a question will be posed or a condition evaluated, leading to diverging paths based on the outcome. Typically, the question inside the diamond will have binary answers, such as "Yes" or "No," directing the flowchart into two potential paths based on the answer given.

This distinct shape sets it apart from other symbols used in flowcharts; for instance, squares usually represent processes or actions, circles are often used to denote the start or end of a flowchart, and triangles are not standard in flowchart representation for decision-making. By using a diamond for decisions, it helps anyone reading the flowchart to quickly understand where choices occur and how they affect the subsequent steps in the process.