Black Triangle Sighting in Denver, Colorado on November 5th 2015 – Observed object traveling silently from north to south outside lincoln college of technology in denver

I was outside looking for meteor sightings when out of the corner of my eye noticed something. I observed a large triangle like craft traveling from north to south moving silently. All I could see was the triangle outline, one light in the very center and 2 lights on each side with one at the front. Not sure if it was a military plane but Denver international airport is fairly close and I am 100% certain it was not a jet especially since it seemed much closer and made no noise at all. The sighting lasted maybe 1 minute and it traveled in a straight line it seemed. I've never reported anything like this before and was curious if anybody out there also saw it.