
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 sum of the two base angles of a trapezoid is $90^{\circ}$. The length of the upper base is 5, and the length of the lower base is 11. Calculate the length of the segment connecting the midpoints of the two bases.

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