An isosceles trapezoid has parallel sides and . The length of is centimeters, the length of is centimeters, and the lengths of the non-parallel sides and are each centimeters. The equation represents this situation. Which of the following is the best interpretation of 80 in this context?
The sum of the lengths, in centimeters, of the two parallel sides.
The sum of the lengths, in centimeters, of the two non-parallel sides.
The perimeter, in centimeters, of the trapezoid.
The difference, in centimeters, between the lengths of the parallel sides.
