Chord is the distance between the leading and trailing edges measured along the chord line.

• A. Upper Camber
• B. Trailing Edge
• C. Chord Length
• D. Chord

Answer: (D)

In airfoil geometry, the straight-line distance from the leading edge to the trailing edge, measured along the line that directly connects them, is called the chord. That connecting line is the chord line, and the distance along it is the chord length, but in common terminology this distance is simply referred to as the chord. So the statement matches the conventional use of the term: the chord is the measure from front to back along that straight line. Upper camber describes the curvature of the surface, not a distance; the trailing edge is just the rear edge of the wing; and while chord length is a valid term for the numeric distance, the wording given points to the term chord itself.