We can add vertices on curve directly, that will split the curve by default. However we cannot add vertices in the middle of face, for that we need to have curve there. That is why we split the face --> to get curve --> which will be used to add vertices at required locations.
We can add vertices on curve directly, that will split the curve by default. However we cannot add vertices in the middle of face, for that we need to have curve there. That is why we split the face --> to get curve --> which will be used to add vertices at required locations.
