Polygon skylights is a type of pyramid skylight that is constructed over five, six, eight or twelve sided openings, as well as over irregular multi-sided openings. Most commercial monumental skylights are some form of polygon skylight, as they can serve as an attractive centerpiece in libraries, universities, shopping malls, sports venues and other high-traffic public areas. Skylight pitch is normally determined by the architect's aesthetic intent, structural engineering requirements, or both.