the answer is 12 or 5 it is all how you look at it............
A regular pentagon has five axes of symmetry.
In a regular heptagon, there are 7 lines of symmetry because there is one line of symmetry for every side.
3
0 if it is irregular, 8 if it is regular. Probably some numbers in between are possible, too.
i think 5
It has 5 axes of symmetry
Not sure about a duodecagon, but a regular dodecagon has 12 axes of symmetry.
A heptagon can have 0, 1 or 7 lines of symmetry. 7 only if it is a regular heptagon.
A regular pentagon has five axes of symmetry.
In a regular heptagon, there are 7 lines of symmetry because there is one line of symmetry for every side.
12
5
3
5
i think 5
0 if it is irregular, 8 if it is regular. Probably some numbers in between are possible, too.
A heptagon has seven sides, so a regular heptagon has seven lines of symmetry (they run from each vertex to the middle of the opposite side).