The diagram below is only half a symmetrical figure. Complete the figure.

1. Identify the line of symmetry and the reflection rule

The line of symmetry is $y = 14 - x$, which means $x + y = 14$. For any point $(x, y)$, its reflection across this line is $(14 - y, 14 - x)$.

2. Reflect each vertex across the line of symmetry

Reflecting the given vertices:

1. $(2, 12) \rightarrow (14-12, 14-2) = (2, 12)$ (on the line)
2. $(2, 9) \rightarrow (14-9, 14-2) = (5, 12)$
3. $(4, 9) \rightarrow (14-9, 14-4) = (5, 10)$
4. $(4, 8) \rightarrow (14-8, 14-4) = (6, 10)$
5. $(2, 6) \rightarrow (14-6, 14-2) = (8, 12)$
6. $(7, 4) \rightarrow (14-4, 14-7) = (10, 7)$
7. $(8, 2) \rightarrow (14-2, 14-8) = (12, 6)$
8. $(11, 3) \rightarrow (14-3, 14-11) = (11, 3)$ (on the line)

3. Connect the reflected vertices to complete the figure

Connect the points in order: $(11, 3) \rightarrow (12, 6) \rightarrow (10, 7) \rightarrow (8, 12) \rightarrow (6, 10) \rightarrow (5, 10) \rightarrow (5, 12) \rightarrow (2, 12)$.