
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 $ABCD$, sides $AB$ and $CD$ are equal, and the height from $AB$ to $CD$ is equal to half the length of $AB$. If $AB$ is 12 units and the side $BC$ is 5 units, calculate the perimeter of trapezoid $ABCD$.

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