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).
The Boeing Superfortress was one of the largest aircraft used in World War II. The Boeing Superfortress was a 4 engine heavy bomber known for delivering the atomic bomb during the war. Boeing Superfortress history, design, development, production numbers, assembly lines, specifications, and surviving planes.