Basic shape can be seen everywhere in our life, such as rectangular billboards, doors and windows, various kinds of signs, etc. In plane composition, new shapes can be obtained by combining the basic shapes. For example, simple combination of triangles can remind people of rolling mountains; overlapping of ellipses can remind people of cascading leaves.
Different basic shape groups can bring people different visual enjoyment. The combination of basic forms can change in size, direction, shape, color, position and space to create new forms. This kind of composition is simple and easy, which is helpful for the application of various performance elements and the composition of the screen, thus making the design works richer.