How can you figure out weather or not an interval is perfect , major, or anything else

Whereas traditional stock agencies showcase the work of professional photographers, anyone can submit to microstock agencies, provided images meet the criteria that the microstock agency has set up. true or false?

Artworks made to be used in a ritual context often have what kind of meanings in addition to their appearance and visual impact?

I’m the marriage of giovanni arnolfinj and giovanni cermani painted by jan van eyck the symmetry we may observe is primarily symmetry