
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
The vertices of the broken line $A B C D E F G$ have coordinates $A(-1, -7), B(2, 5), C(3, -8), D(-3, 4), E(5, -1), F(-4, -2), G(6, 4)$.

Find the sum of the angles with vertices at points $B, E, C, F, D$.

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