This type of problem involves relationships among the lengths of the sides and height
as well as the area, and perimeter
of a trapezoid. Since the height
to both parallel bases, it is often possible to form a right triangle
and use the Pythagorean Theorem
to calculate missing measurements. Remember that sometimes there is not enough information given to find the perimeter. While the bases and height
do determine the area, there are infinitely many trapezoids with the same bases and height, but different non-parallel sides.