Question 278334
it has 2 sides that are parallel and 2 sides that are not.


here's a good definition from the web:


<a href = "http://id.mind.net/~zona/mmts/geometrySection/commonShapes/trapezoid/trapezoid.html" target = "_blank">http://id.mind.net/~zona/mmts/geometrySection/commonShapes/trapezoid/trapezoid.html</a>


the formula for the area of a trapezoid is equal to (1/2) * (b1 + b2) * h


b1 and b2 are the parallel sides of the trapezoid.


a reference for that can be found here:


<a href = "http://www.mathwords.com/a/area_trapezoid.htm" target = "_blank">http://www.mathwords.com/a/area_trapezoid.htm</a>