Question

What are some examples of supersonic wings?

		Double-wedge airfoil
		Thick cambered airfoils
		Swept wings
		All of the above
		A and C above

Answer 1

Considering a rectangular wing, the pressure at a point P with coordinates (x,y) on the wing is only being defined by pressure disturbances originated at points within the upstream Mach cone emanating from point P.^[3] As result, the wing tips modify the flow. The remaining area of the wing does not suffer any modification by the tips and can be analyzed with two-dimensional theory. For an arbitrary planform the supersonic leading and trailing are those portions of the wing edge where the components of the freestream velocity normal to the edge are supersonic. Similarly the subsonic leading and trailing are those portions of the wing edge where the components of the free stream velocity normal to the edge are subsonic.

therefore

Delta wings have supersonic leading and trailing edges; in contrast arrow wings have a subsonic leading edge and a supersonic trailing edge.

also

Supersonic airfoils generally have a thin section formed of either angled planes or opposed arcs (called "double wedge airfoils" and "biconvex airfoils"

A swept wing is a wing planform favored for high subsonic and supersonic speeds, and is found on almost all jet aircraft in one form or another

source wikipedia...

so the answer is A and C