Trapezoid Area
Enter the two bases and the height.
Result
-
Enter numbers to see the result.
Average of bases
-
Midsegment
-
Formula: Area = ((a + b) / 2) x h. The average of the two bases times the height.
Find the area of a trapezoid from the two parallel bases and the height between them.
Enter the two bases and the height.
Enter numbers to see the result.
A trapezoid has one pair of parallel sides, the bases. Averaging them gives the width of an equivalent rectangle, and multiplying by the height (the perpendicular distance between the bases) gives the area: ((a + b) / 2) x h.
The midsegment joins the midpoints of the non-parallel sides, and its length equals the average of the bases. So the area is also midsegment x height, a handy check that the tool shows for you.