four lines
six
None or one.
That will depend on the shape of the figure which isn't named
There are many ways to create a stick figure using standard textual symbols. 'o-[-
If the figure is an image of a real heart, then there are no lines of symmetry. If it is an idealised heart, then 1.
It depends on the irregular figure. A rectangle, for example, has two.
An octagon is an eight-sided figure.
Stick Figure Neighbourhood was created in 1981.
we make a stick figure with toothpicks or matchsticks and lick them together
A lot
It can certainly have 0, 1, 2 or 6 lines of symmetry.
There's a game where you're a stick figure and you dodge sticks?