How many pairs of parallel sides does the trapezoid have

The answer depends on the definition of trapezoid. There are two valid definitions of a trapezoid. Find out the one your teacher uses, and answer accordingly.

1) Definition: A trapezoid is a quadrilateral with exactly one pair of opposite sides parallel.

According to this definition, a trapezoid has one pair of opposite sides parallel and one pair of opposite sides that is not parallel. According to this definition, a quadrilateral cannot be both a trapezoid and a parallelogram.

1 pair

2) Definition: A trapezoid is a quadrilateral with at least one pair of opposite sides parallel.

According to this definition, if at least one pair of opposite sides is parallel, the quadrilateral is a trapezoid. If both pairs of opposite sides are parallel, then it is still a trapezoid, but now it is also a parallelogram. According to this definition, a parallelogram is a special case of a trapezoid.

1 pair or 2 pairs

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8