A tri-wing or tri-plane.
Bi-plane
Biplane( bi-plane )
a biplane is an aeroplane with two sets of wings, one above the other.
You call a plane with two set of wings a Biplane.A plane with one set of wings is called a monoplane.A plane with three set of wings is called a triplane.
An airplane with 2 sets of wings is known as a biplane.
An airplane with two sets of wings is called a "biplane." Biplanes were commonly used in the early 20th century for military and civilian aviation due to their increased structural strength and maneuverability. The design features one wing stacked above the other, which provides additional lift and stability compared to monoplanes.
A biplane
a biplane
triplane
A Biplane.
Biplane