
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
We call the quadrilateral obtained by sequentially connecting the midpoints of each side of any quadrilateral a midpoint quadrilateral. When studying midpoint quadrilaterals, Xiaoming obtained the following three conclusions:<br/>① The midpoint quadrilateral of a quadrilateral with equal diagonals is a rhombus;<br/>② The midpoint quadrilateral of a quadrilateral with perpendicular diagonals is a rhombus;<br/>③ The midpoint quadrilateral of a rectangle is a square.<br/>Which of the following statements is correct? ______$(Fill in the serial number, only one is required)$.

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