At a very detailed level, none since it has one asymmetrically located heart. Superficially it has one plane of symmetry and so any one of the infinitely many lines in that plane will be a line of symmetry.
A nephroid has 2 lines of symmetry.
it has five lines of symmetry
10 lines of symmetry
4 Lines of symmetry
2 lines OF SYMMETRY
2 lines of symmetry
It has 2 lines of symmetry.
no lines of symmetry
2 lines of symmetry
5 lines
There is no such thing as 8 lines of symmetry. A circle, for example, has infinitely many lines of symmetry.
There are infinitely many lines of symmetry. Every line can be a line of symmetry for a suitable shape.