Corresponding sides are a pair of matching sides in two different shapes (size does not matter). In the field of geometry, the concept of corresponding sides plays an important role to prove various triangular theorems.
The Boeing B-17 Flying Fortress is a four-engine heavy bomber aircraft developed in the 1930s for the United States Army Air Corps (USAAC).
See more military jets pictures. The Boeing B-52 Stratofortress is a tribute to the United States Air Force teams that have flown and maintained the aircraft over the years, and to the Boeing personnel who conceived of the aircraft, built it, and have maintained it in service for an incredible length of time.