Which method did italian renaissance artists use to give their flat paintings and sense of depth

 Italian Renaissance artists used perspective to give their flat paintings and sense of depth. perspective gives the illusion something isn't two-dimensional, giving it depth if you look at it from a certain perspective, or point. 

-hope this helps

Opposition of two melodic ideas is the  right answer 

Iam about 95% sure this wasn't asked on a school assignment.never heard of it.i dunno, i've been missin' you?