3:11 AM, Tuesday August 24th 2021
This isn't the method I'm using for the boxes I am using for the challenge - These were simply for a visual example, created using a ruler, as I said in my initial post. I used pre-set points for these boxes because my question could be illustrated most effectively in this fashion. This doesn't really answer my question of why the three lines that form the interior corner of the box don't intersect at a single point, but instead intersect three times, assuming all lines created preceding these final ones converge perfectly.