Yes, it is possible to have a one dimensional plane. In mathematics, a one dimensional plane is known as a line. It is a flat, straight object that extends infinitely in both directions.
A one dimensional plane is represented mathematically using a single coordinate axis. This axis can be labeled as x or y, and the points on the line are identified by their distance from the origin (0).
No, physical objects cannot exist in a one dimensional plane. Objects in our world have length, width, and depth, which require at least a two dimensional plane to represent. However, mathematical concepts and equations can exist in a one dimensional plane.
A one dimensional plane is different from a two dimensional plane in that it only has one coordinate axis, while a two dimensional plane has two coordinate axes (x and y). Additionally, a one dimensional plane only has length, while a two dimensional plane has both length and width.
Some real-life examples of a one dimensional plane include a straight road, a railway track, a wire, and a number line. These objects can be represented by a single coordinate axis and have length but no width or depth.