Triangular-shaped UFO sighted by a flight passenger

On July 31, 2014, a flight passenger has spotted, through the hatch, a perfect triangular-shaped UFO. Fortunately, he had enough time to take several photos of this incredible unidentified object …

Witness statement:

I was flying to Toronto on July 31st, 2014. I had an aisle seat, but lucky me the middle and window seat were empty, so I had the whole row to myself. I decided to sit by the window so I could look outside and lean my legs against the wall of the plane. As I was looking out the window I noticed a massive triangle, large enough for me to see from an airplane, and it was in an area surrounded by trees and mountains. There was nothing but untouched and uninhabited nature for miles/kilometers. The triangle was impossible to miss. And it was a perfectly shaped. All I could think is how could something of that size be cut so perfect. Then I starting thinking why is there a giant triangle cut out in the trees in the absolute middle of no where. If it were for foresting they would cut a whole section, not a triangle. Nothing made sense as to why the triangle was there. I took out my phone and took pictures of it, but the photos don't do justice to what I saw with my own eyes. I snapped a couple pictures as quickly as I could, then we flew beyond the triangle and it was out of sight. I kept looking at my pictures once the plane was beyond the triangle, zooming it and trying to examine what it could be. I have no answers.