Which term describes the wing's upward slope from root to tip?

• A. Anhedral
• B. Dihedral
• C. Sweepback
• D. Twist

Answer: (B)

Dihedral describes the wing's upward slope from root to tip. This arrangement increases lateral stability because when the aircraft banks, the lower wing ends up with a higher angle of attack and generates more lift than the upper wing. That extra lift on the lower wing tends to raise it and pull the airplane back toward level flight, creating a restoring roll moment. Anhedral would do the opposite, reducing lateral stability. Sweepback is about the backward tilt of the wing’s leading edge, not the vertical climb from root to tip, and twist refers to changes in angle of attack along the wing span, not the overall upward slope.