One Point Perspective

Perspective is the way we see an object from certain angle or certain view.

Perspective can be divided into 2, they are linear perspective and atmospheric perspective.

Linear perspective;
The edge of a cube has three points, 1 horizontal and 2 verticals. Therefore in linear perspective we can say that there are three types of linear perspective, they are 1, 2, and 3 points of perspective.

One Point Perspective
It means we see an object from one point of view only, and the vanishing point is located at one place only.
Usually one point perspective is rarely used as most of the objects have either two or three point of perspective. One point perspective is usually used when drawing a tunnel or hallway where the perspective come from one point only. If we view an object for example a cube with one point perspective, the position of the cube would be parallel with our eyes, so all we see is a square and not a cube.