I meant Line integral. 1. The problem statement, all variables and given/known data I want to find the path integral of a vector function F over a closed path in Euclidean space with z = 0. 2. Relevant equations 3. The attempt at a solution I was wondering if it is allowed to first use Stoke's theorem and then Green's theorem. I would end up getting div(curl(F)) which I believe equals to zero. But I am not sure if I'm allowed to use Green's theorem in this case.