
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
Divide a regular 2017-gon into 2015 triangular regions using 2014 diagonals that do not intersect within the polygon. Find the maximum possible number of isosceles triangles among these 2015 triangles.

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