
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
Which of the following $5$ statements is correct? $(Please fill in the correct statement number)$.  
① In a triangle, at least two angles are acute angles.  
② The medians, altitudes, and angle bisectors of a triangle are all line segments.  
③ The exterior angle of a triangle is greater than any of its interior angles.  
④ Same-side interior angles are supplementary.  
⑤ If the lengths of three line segments $a$, $b$, and $c$ satisfy $a + b > c$, then a triangle can definitely be formed with sides of lengths $a$, $b$, and $c$.

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