The actual triangle shaped UFO is real. It's called the TR3b Spacecraft. It's officially just a Triangle Spacecraft but it's known as the tr3b. this is the US Patents office official submitted application for a Triangular Spacecraft. Here's the official description about it, check this out. This combination of fields produces a space-time force in both the vertical and horizontal directions such that the spacecraft receives a lift force and a force of propulsion.
The tr3b Triangular Spacecraft which regularly get's mistaken for a UFO is real 100% and here's the proof! The US Patent & Trademark Office has a Patent on the back engineered piece of history. It is always been looked upon as a back engineered UFO or reverse engineered from a real UFO and the technology involved is mind boggling. Wonder no more as it's very real guy's.