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).
A kite has only one line of rotational symmetry, as it is only the same if it is tilted once. (back to its normal position).
a circle or a sphere
Rotational symmetry of order 1.
It has 8 rotational symmetry.
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).
no rotational symmetry
a nonagon.