squares and rectangles
ractangle
rectangles
Square, rectangle, rhombus
rhombus, rectangle etc.
Lines of symmetry must be equal halves.
Regular polygons.
rhombus,parralellagram ,rectangle
All regular ones do.
Providing that it is a regular 9 sided nonagon it will have 9 lines of symmetry
A polygon that has four lines of symmetry is a square. The lines of symmetry in a square include two diagonal lines and two lines that bisect the sides vertically and horizontally. Other polygons, such as the rectangle (not a square) and certain types of rhombuses, can also have four lines of symmetry, depending on their specific dimensions and angles. However, the square is the most common example of a polygon with exactly four lines of symmetry.
The number of lines of symmetry in a polygon corresponds to the number of sides it has. If a polygon has n sides, then its symmetry will be n lines of symmetry and it will have one point of symmetry. A pentagon has five lines of symmetry, nonagon has 9, n-gon has n lines of symmetry, so on and so forth.
Rectangle, and equilateral/icoscles triangle, and a pentagon