Is it possible to add area vectors?

Hello
I have two area vectors face south and southeast. Is it possible to combine the two vectors and obtain a new direction like the sketch below?

Use the Addition component.

{x0,y0,z0,a0} + {x1,y1,z1,a1} = {x0+x1,y0+y1,z0+z1,a0+a1}