There is an infinite number of lines across a circle that form two symmetric half-circles.
They have infinite lines of symmetry.
H,I,O,X Note that if you draw "O" as a perfect circle, it will have infinitely many lines of symmetry.
If you are talking about a perfect circle, it has wan infinite number if lines of symmetry. If you are talking about and actual lower case o, then the answer is two.
it has five lines of symmetry
A nephroid has 2 lines of symmetry.
10 lines of symmetry
4 Lines of symmetry
2 lines of symmetry
2 lines OF SYMMETRY
2 lines of symmetry
It has 2 lines of symmetry.
no lines of symmetry