Answer:
TWO PARALLEL LINES AND LINES WITH EQUAL LENGTHS
Explanation:
As we all know a quadrilateral is a polygon with four sides(edges and corners). Trapezoid is a four sided shape with opposite sides parallel while parallelogram is also a for sided shape that has its opposite sides paralleled.
NOW, a quadrilateral is said to be both a trapezoid and a parallelogram when there are two opposite parallel lines , which are lines with equal lengths.