Infinitely many.
a heart have no rotational symmetry!
A regular hexagon has 6 rotational symmetries (rotational symmetry of order six) and 6 reflective symmetries (six lines of symmetry).
Rotational symmetry of order 1.
A line has 180 degrees rotational symmetry.
It has 8 rotational symmetry.
There is one line of symmetry in a kite
Infinitely many.
An ellipse has rotational symmetry of order 2.
2
yes, in fact it can have 6 rotational symmetries.
9 reflection
18
5
Two.
a heart have no rotational symmetry!
A regular hexagon has 6 rotational symmetries (rotational symmetry of order six) and 6 reflective symmetries (six lines of symmetry).