Trapezoid Area Calculator

What is a trapezoid?
A trapezoid is a geometric form with two parallel sides. This is not saying much about a trapezoid, so it is quite difficult to do calculations. At least you know that angles lying at different of the parallel sides need the sum 180°.
If you ever had problems with the formulas in geometry class on trapezoid calculations, this calculator is made specially for you. In just a few simple steps, you will be able to find the area of a trapezoid.