double point perspective is probably two point perspective which is just instead of using one point like in one point perspective, there are two points that come from the eyeline/horizon line.
Here is a simple link on what and how to draw two point perspective.
http://drawsketch.about.com/library/weekly/aa021603c.htm
Two point perspective.
I believe it is just called one-point perspective.
angular?
In a linear perspective picture, all lines that create Depth will go towards ONE perspective point. Example: http://www.ider.herts.ac.uk/school/courseware/graphics/images/1point_kitchen.gif This is also known as one-point perspective. This kind of perspective is generally used when you are facing directly at an object A 2-point perspective is exactly the same, only instead of 1 set of lines for depth going towards the 1 perspective point, there are two. Example(s): http://www.utdallas.edu/~mel024000/pages/ill_space.html This kind of perspective is generally used when you want to get the angle/corner of an object A 3-Point perspective is, again similar to the other two, only now you're including a 3rd point which is used to direct the vertical lines to give a sense of height. Example: http://www.andrewdiec.com/Perspective/3Point.jpg This kind of perspective is generally used when displaying large buildings to give a sense of great height.
The image would appear distorted and not realistic
Alright, buckle up buttercup. There are three main types of perspective in art: one-point perspective, two-point perspective, and three-point perspective. Each of these bad boys helps artists create the illusion of depth and space in their work. So, there you have it, the holy trinity of perspective.
There are three main types of perspective in art: one-point perspective, two-point perspective, and three-point perspective. One-point perspective involves a single vanishing point on the horizon line, while two-point perspective has two vanishing points on the horizon line. Three-point perspective incorporates a third vanishing point above or below the horizon line for a more dynamic composition.
single point is smaller while multiple point is larger
Single-point perspective uses only one vanishing point, whereas multiple-point perspective uses two or more vanishing points.
Positioning is the main difference between one-point and two-point perspectives. One-point perspective uses one vanishing point while two-point perspective uses two.
One-point perspective has only one vanishing point.
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you have to know how to use these: shading, 1 point perspective, and 2 point perspective.
One-point perspective has only one vanishing point.
Single-point perspective
Two point perspective.
Single-point perspective uses only one vanishing point, whereas multiple-point perspective uses two or more vanishing points.