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.
a bi-planeA plane with two set of wings is a biplane.
A biplane
Biplane
A two-footed animal
Bi-plane
It's called a bi-plane
a biplaneBiplane
a biplane. which is a two wing arragement.
Biplane( bi-plane )
two sets of wings
ladybugs have two sets of wings
A biplane has two (bi) sets of wings, and a monoplane has one (mono) set of wings. The two sets of wings on a biplane add lift, and also drag, allowing it to fly slower. The one set of wings on a monoplane do not add as much lift or drag, making it faster, and as a result, all the fastest planes are monoplanes, and most planes these days are monoplanes.