11. The figure on the right can be drawn in one stroke, there are $\qquad$ different ways to draw it in one stroke (if the starting point, ending point, or order is different, it counts as a different way).



The translation preserves the original text's line breaks and format.
【Analysis】12 kinds
Exam point: One-stroke drawing;
First, name each point in the figure as follows:
Since points $A, B$ are both odd points, the drawing method must start from $A$ and end at $B$, or start from $B$ and end at $A$, and it is not difficult to think that the number of drawing methods for these two cases is the same;
Below, take the example of starting from $A$ and ending at $B$: If you first draw from $A$ to $B$, then the remaining square has only 2 drawing methods, clockwise and counterclockwise, i.e., $A B C A D B$ and $A B D A C B$; If you first draw from $A$ to $C$, then you must next draw to $B$, after which there will be 2 choices:
One is to draw directly to $A$, then from $D$ to $B$, i.e., $A C B A D B$;
The other is to go through $D$ to $A$, then from $A$ to $B$, i.e., $A C B D A B$;
If you first draw from $A$ to $D$, according to the symmetry of the figure, the number of kinds should be the same as first drawing from $A$ to $C$, which is also 2 kinds; In summary, there are $2+2+2=6$ drawing methods starting from $A$ and ending at $B$, and similarly, there are 6 drawing methods starting from $B$ and ending at $A$; Therefore, the figure has a total of $6+6=12$ different one-stroke drawing methods.