How many sides does a hexagon have?

A hexagon is defined as a polygon that has six sides. The term "hexagon" is derived from the Greek words "hex" meaning six and "gonia" meaning angle. Each vertex (corner) connects two sides, and as such, a shape with six vertices will have six sides. Therefore, the correct answer is that a hexagon has 6 sides. Recognizing the properties and definitions of polygons is essential in geometry, and understanding that hexagons specifically have six sides is a fundamental aspect of this knowledge.