All regular ones do.
Lines of symmetry must be equal halves.
Regular polygons.
ractangle
rectangles
squares and rectangles
All convex polygons have lines of symmetry. Only concave (i.e. ones with sides that cave in) do not. If you are looking for a name of a shape that has no line of symmetry, then there aren't any with specific names.
A circle (infinitely many lines of symmetry), ellipse, rectangle, and all regular polygons.
Providing that it is a regular 9 sided nonagon it will have 9 lines of symmetry
It could but not all of them .if this is not the answer you are looking for then i am so sorry. :( A polygon CAN have 5 lines of symmetry or more, such as a pentagon, hexagon or an octagon, etc. however, polygons like the square or triangle don't have 5 lines of symmetry.
Square, rectangle, rhombus
rhombus, rectangle etc.
A hexagon has 6 lines of symetry and a dodecagon has 12. The number of sides equal the number of ines of symetry