Is it possible to add a loop cut and slide like this I am try to make a model of a knife, and i am using the loop cut and slide option.
this is what i managed to do before i ran into a little problem



now i want to make it so that the purple line that appears when i click on the loop cut and slide option is rotate by 90 so that i can place it like this


i am using a plane mesh to which i added some thickness
I see that you have a triangular face there.


Just make it quadratic and the edge loop would work.