Demonstration of 1-point perspective drawing. This drawing has a single vanishing point. The perspective lines are shown over the drawing.
<a href="//commons.wikimedia.org/wiki/User:Braindrain0000" title="User:Braindrain0000">Braindrain0000</a>
CC BY-SA 3.0
Own work by uploader, created using Inkscape based on <a href="//commons.wikimedia.org/wiki/File:1_point_perspective.jpg" title="File:1 point perspective.jpg">Image:1 point perspective.jpg</a>.