It is a regular 6 sided hexagon
A regular pentagon has five axes of symmetry.
0 if it is irregular, 8 if it is regular. Probably some numbers in between are possible, too.
3
Octagon
i think 5
In a regual shape the number of axes of symmetry is equal to number of sides.
A polygon need not have any axes of symmetry. It can have at most n axes where n is the number of sides that the polygon has.
it's a hexagon
It has 5 axes of symmetry
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.
Not sure about a duodecagon, but a regular dodecagon has 12 axes of symmetry.
A regular pentagon has five axes of symmetry.
cube
The square.
A regular pentagon has five axes of symmetry. Each axis passes through one vertex and the midpoint of the opposite side. In contrast, an irregular pentagon may have fewer axes of symmetry, depending on its specific shape.
0 if it is irregular, 8 if it is regular. Probably some numbers in between are possible, too.
12