
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
A triangle has a base of 18 inches. Two lines are drawn parallel to the base, terminating in the other two sides, and dividing the triangle into three areas with a ratio of 1:2:1, from the top to the bottom respectively. Find the length of the middle segment parallel to the base.

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