
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Triangles $\triangle ABC$ and $\triangle A'B'C'$ are situated in the coordinate plane with vertices $A(0,0)$, $B(0,8)$, $C(10,0)$, $A'(7,7)$, $B'(7,15)$, $C'(-3,7)$. A rotation of $n$ degrees counterclockwise around the point $(x,y)$ where $0<n<180$, will transform $\triangle ABC$ to $\triangle A'B'C'$. Find $n+x+y$.

Present the answer in LaTex format: \boxed{Your answer}
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