Which polygon has 6 sides?

A polygon with six sides is known as a hexagon. The word "hexagon" comes from the Greek "hex," meaning six, and "gon," meaning angle or shape. Each vertex in a hexagon connects to two additional vertices, creating a closed polygon with six straight edges.

In geometric terms, a hexagon can also be regular (where all sides and angles are equal) or irregular (where sides and angles can vary). The sum of the interior angles of a hexagon can be calculated using the formula for polygons, which is (n - 2) × 180°, where n is the number of sides. For a hexagon, this results in a total of 720°.

The other choices represent different polygons. A quadrilateral has four sides, an octagon has eight sides, and a pentagon has five sides. Thus, the identification of a hexagon as the polygon with six sides is accurate and highlights the relationship between the number of sides and the nomenclature of polygons.