
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
Let  $ABCD$  be a square of side length  $4$ . Points  $E$  and  $F$  are chosen on sides  $BC$  and  $DA$ , respectively, such that  $EF = 5$ . Find the sum of the minimum and maximum possible areas of trapezoid  $BEDF$ .

*Proposed by Andrew Wu*

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