What type of figure is a polygon?

A polygon is defined as a closed figure composed of a finite number of straight line segments connected to form a shape. The key characteristic of a polygon is that its boundaries are formed entirely by straight lines, and it encloses a space, making it a closed figure. This definition distinguishes polygons from open figures, which do not complete a shape, and from curved figures, which do not consist solely of straight lines. Therefore, identifying a polygon as a closed figure is accurate and reflects its fundamental properties in geometry.