What are the three elements of plane composition?

The three elements of are points.

upper thread

If you say

Elements are colors, and hue can be used.

light

soak

To form. That is to say, this plane mainly depends on its length and width from one point to another, as well as whether its line is straight or curved, and whether the final surface is flat or concave and convex. These are the factors that determine the plane.