Question Consider the following statement: A trapezoid is a four-sided figure with one set of parallel lines. Enter 1 if the statement is a conjecture. Enter 2 if the statement is a definition. Enter 3 if the statement is a theorem.

The statement "A trapezoid is a four-sided figure with one set of parallel lines" describes a specific characteristic of trapezoids, which serves to define what a trapezoid is. Therefore, it is a definition.

So, the answer is **2**.