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.
They Taught the World to Fly! Wind, sand, and a dream of flight brought Wilbur and Orville Wright to Kitty Hawk, North Carolina where, after four years of scientific experimentation, they achieved the first successful airplane flights on December 17, 1903. With courage and perseverance, these self-taught engineers relied on teamwork and application of the scientific process.