
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
In trapezoid \(ABCD\), \(AD\) is parallel to \(BC\), and \(AB = 6\), \(BC = 7\), \(CD = 8\), \(AD = 17\). If sides \(AB\) and \(CD\) are extended to meet at \(E\), find the resulting angle at \(E\) (in degrees).

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