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.
Most people think about Orville and Wilbur Wright. And, December 17, 1903 is the day to remember. That was the day that Orville won the toss of the coin. He made the first successful powered flight in history! The place was Kitty Hawk, North Carolina. The Wright Brothers' dream of inventing a flying machine had come true.