When you are drawing in perspective, you need to figure out how far apart certain lines need to be. If you are drawing something that occurs in a pattern, like telephone poles, the objects get smaller and closer spaced the farther away it gets.
This website just talks about the lines, and steps you need to place on the paper to complete your drawing. The factors that applies every time you are drawing this way are vanishing points, and a horizon line. You need both of these factors to draw realistically.
This website shows how angles come into art in museums. One painting might look realistic, but it doesn’t quite seem like it has depth. Another painting might not seem as realistic, but does seem like it is popping out of the canvas. This is because the second painting used the right ways to portray depth.
Triangles are places on the paper, and the vertices are the vanishing points. Vanishing points are when you can no longer see it because it is too far away. also, you can determine where the vanishing points are if you see parallel lines. Annalisa Crannell brings chopsticks to art museums to figure out how to view the art piece.