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.
Dayton, Ohio. The Wright brothers, Orville (August 19, 1871 â January 30, 1948) and Wilbur (April 16, 1867 â May 30 1912), were two Americans credited with building the world's first successful fixed-wing aircraft and making the first controlled, powered and heavier-than-air human flight on December 17, 1903.