That is a monoplane. The one in the picture above is a biplane.
No.
Monoplane
A Monoplane is a airplane with one main wing. This has been the dominate design for planes since the 1930's.
The wing spar. The spar is the main structure of the wing that supports the load of the entire airplane. All the loads go through the wing into the wing spar and down to the center of it, which is called the "wing box". (You could call this the most important part,)An airplane may fly without its engines. It might be able to fly without its flight controls. But it can not fly if the wing spar breaks.
What wing design for a paper airplane will soar the farthest
1905 was the first fixed wing airplane
Yes because an airplane wing has to cut through wind and create loft and lift.
The best wing shape for sn airplane is like a triangle because it fly straight
Because if you only have one wing it's not gona be balanced!
The air above an airplane wing in flight is at lower pressure than the air below the wing. Hope this helps.
The ford Trimotor or Fokker F.VII
It's the length of the wing. Depends on make.