Planes of the Head Google image search for planes of the head: https://www.google.com/search?hl=en&q=planes+of+the+head&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&authuser=0&ei=70SAUJ7vEPGp0AHPoIDwCg&biw=1920&bih=985&sei=8USAUI3oGcbe0QGbkoDYAw