This resource has been contributed by Winpossible, and can also be accessed on their website by clicking here - Area of a Trapezoid
In this mini- lesson, you'll learn the formula used for calculating area of a trapezoid. It will be shared with the help of some examples and practice questions with solution, and watching video as well as explanations by the instructor.
You know from earlier learnings that a trapezoid is a 4-sided figure with one pair of parallel sides. To find the area of a trapezoid; take the sum of its bases, multiply the sum by the height of the trapezoid, and then divide the result by 2. Here the height is the length of segment drawn perpendicular to the base from an opposite vertex. If h is the height and b1
are bases of a trapezoid, then its area is: ½ × height × (Sum of bases) i.e. = ½ × h × (b1
). For example, if height of a trapezoid is 8 inches and bases of trapezoid measure 13 and 15 inches, the area is given by = ½ × 8 × (13 + 15) which works out to 112 inches
This FREE mini-lesson is a part of Winpossible's online course that covers all topics within Geometry. Click on the video below to go through it. If you like it, you can buy our online course in Geometry by clicking here.