A hexagon, or more accurately a regular hexagon is a polygon with six edges and six vertices, all edges are the same length and all internal angles are also the same. Often seen in nature from bee hives to the stones of the Giant's causeway in Ireland. Like squares and Equilateral triangles, regular hexagons fit together without any gaps to tile the plane (three hexagons meeting at every Vertex), and so are useful for constructing Tessellation patterns in geodesic geometry.

'A' Iregular hexagon, no sides or angles the same.

'B' Regular hexagon, All sides and angles are equal.

'C' Iregular hexagon, all sides are equal but angles are not.