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).
a group of flying squirrels is called a dray or a scurry. Mensan, woodworker, building electronics projects since age 12, taught electronics, am in ham radio, very good at biology/astronomy/physics.