I am playing a video game and I am trying to get to the objective, but there is an enemy. I am in a triangular map (what a coincidence) The objective is in the north-most vertex. The enemy is in the centroid of the triangle (another coincidence). I need to find out where the centroid is in the map, to eliminate my enemy and get to the objective. I first need to get to the midpoint of the edge of the map that I am closest to. Then find the centroid and win the game!
Now knowing that I need to get to (5,0), travel 60 meters, and my enemy is at (5,3) I can win. If I don't mess up cause I'm bad at the game. :'(