Balance refers to how elements are arranged horizontally or vertically in a design.
Balance can be achieved with color, line, shape, and/or texture.
There are two different types of balance: symmetrical (formal) and asymmetrical (informal). Symmetrical means having all elements equal on both sides of a design. Asymmetrical is when elements on both sides are not equal.
Rhythm creates a feeling of movement. You can achieve rhythm in a design through repetition of lines, colors, shapes and/or texture. Radiation is another way of achieving rhythm in a design. Radiation occurs when lines or other elements extend outward from a central point.