A regular hexagon has 6 but a hexagon can have 0, 1 or 2 axes of symmetry. It cannot have 5. Not sure about 3 or 4.
3
For a regular hexagon I can find 6. For an irregular hexagon I can find fewer.
It is a regular 6 sided hexagon
An irregular hexagon has no axes of symmetry. A regular hexagon, on the other hand, has 6 axes of symmetry: three lines joining the midpoints of opposite sides, and three lines joining opposite vertices.
In a regual shape the number of axes of symmetry is equal to number of sides.
8
It has 5 axes of symmetry
A hexagon can have rotational symmetry of order 1, 2, 3 or 6.It can have 0, 1, 2 or 6 axes of symmetry.
Not sure about a duodecagon, but a regular dodecagon has 12 axes of symmetry.
A regular pentagon has five axes of symmetry.
A hexagon can have rotational symmetry of order 1, 2, 3 or 6.It can have 0, 1, 2 or 6 axes of symmetry.