A six-sided shape is known as a hexagon. This refers to an item with a flat shape that has straight sides.
There can be both irregular and regular hexagons. A regular hexagon occurs when all sides and angles of the polygon are equal. An irregular hexagon is a polygon that still has six sides, but the angles and lengths of the sides are different. Hexagons can also be concave or convex. A convex hexagon has no angles that point inward and no internal angle above 180 degrees. A concave hexagon contains one or more internal angles that are greater than 180 degrees.