Area and Perimeter of a Trapezoid
The area of a trapezoid is found by the formula A=1/2 h(b1+b2), where h is the height (segment joining and perpendicular to the parallel bases), and b1 and b2 are the two parallel sides (bases). Do not use one of the other two sides as the height unless that side is also perpendicular to the parallel bases. The perimeter of a trapezoid is found by the formula P=a+b1+c+b2, where a, b1, c, and b2 are the four sides of the trapezoid.
Provided by: Mometrix Test Preparation
Last updated: 02/19/2018
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