Bi-plane
A tri-wing or tri-plane.
Biplane( bi-plane )
a biplane is an aeroplane with two sets of wings, one above the other.
biplane
It is called a biplane
An airplane that has a set of 2 wings is called a biplane.
to have a aeroplane fly you have to use its fans in its wings
Birds flap their wings while aeroplane do not flap their wings. aeroplane uses engines
An airplane with 2 sets of wings is known as a biplane.
Aeroplane means a vehicle with wings which flies through the air.
monoplane
in the wings