What is the name of a polygon that has 8 sides?

A polygon with 8 sides is referred to as an octagon. The name derives from the Greek word "okta," which means eight. In geometry, the classification of polygons is based on the number of their sides, and as we move up in the count of sides, the names change accordingly. For instance, a hexagon has 6 sides, a heptagon has 7 sides, and a nonagon, which follows the octagon, has 9 sides. Thus, recognizing the structure and naming conventions of polygons helps in correctly identifying and classifying shapes based on their number of sides.