
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
Divide each side of an equilateral triangle into five equal parts. Draw lines parallel to the other two sides through each division point to create a grid of smaller equilateral triangles within the original triangle. Calculate the number of distinct equilateral triangles of different sizes in the diagram.

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