
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
Consider a quadrilateral on a coordinate plane with vertices at \((3,-1)\), \((-1,4)\), \((2,3)\), and \((9,9)\). Assume that one side of the quadrilateral is horizontal. Calculate the area of this quadrilateral.
A) \( 20.5 \)
B) \( 22.5 \)
C) \( 24.5 \)
D) \( 26.5 \)

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