Perspective and Vanishing Points

Our eyes see in a single point perspective, into a vanishing point of convergence where the ground meets the sky at the horizon. Whenever you have parallel lines on a flat plane, like railroad tracks that are equally parallel to each other, they will always converge into a single vanishing point and the lines all come together from both sides and top and bottom or ground and sky like shown in the picture.

Perspective_w4if1p