The parallel sides are called the bases of the trapezoid and the other two sides are called the legs or the lateral sides (if they are not parallel; otherwise there are two pairs of bases). A scalene trapezoid is a trapezoid with no sides of equal measure, in contrast to the special cases below.
It was designed and built by the Wright brothers. They flew it four times on December 17, 1903, near Kill Devil Hills, about four miles south of Kitty Hawk, North Carolina, US. Today, the airplane is exhibited in the National Air and Space Museum in Washington D.C.
In December, 1903 the Wright brothers had lift off in Kitty Hawk, North Carolina (pictured) leading to the state calling itself the First in Flight, a slogan they say they're sticking to. (Anonymous/ASSOCIATED PRESS) As of now, he said, there are no plans to investigate the disputed accomplishment by the state.