Lines of symmetry must be equal halves.
rectangles
A regular hexagon has more than 4 lines of symmetry. Even number sided polygons that are regular and have more than 4 sides have more than 4 lines of symmetry. Circles have more than four lines of symmetry. Squares also have 4 lines of symmetry.
A hexagon has 6 lines of symetry and a dodecagon has 12. The number of sides equal the number of ines of symetry
Providing that it is a regular 9 sided nonagon it will have 9 lines of symmetry
Lines of symmetry must be equal halves.
Regular polygons.
ractangle
rectangles
squares and rectangles
A regular hexagon has more than 4 lines of symmetry. Even number sided polygons that are regular and have more than 4 sides have more than 4 lines of symmetry. Circles have more than four lines of symmetry. Squares also have 4 lines of symmetry.
A hexagon has 6 lines of symetry and a dodecagon has 12. The number of sides equal the number of ines of symetry
All regular ones do.
If you're talking about convex polygons with equal sides (eg. equilateral triangles, squares, pentagons, hexagons, etc.), then the relationship is a very direct one. In those cases, there are as many lines of symmetry as there are points in the polygons. A triangle has three lines of symmetry, a square has four, a pentagon five, etc.
Providing that it is a regular 9 sided nonagon it will have 9 lines of symmetry
Square, rectangle, rhombus
rhombus, rectangle etc.