
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
Given the following propositions: ① The quadrilateral formed by connecting the midpoints of the sides of a rectangle in sequence is a rhombus; ② A quadrilateral with perpendicular and equal diagonals is a square; ③ A quadrilateral with one pair of parallel sides and one pair of equal opposite angles is a parallelogram; ④ A quadrilateral with one pair of parallel sides and another pair of equal sides is a parallelogram. Among these, the true propositions are (please fill in all the numbers of the true propositions).

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