This document discusses various elements and principles of design including line, silhouette, color, texture, value, balance, harmony, unity, rhythm, and emphasis. It provides definitions and examples for each element and principle. Lines can be vertical, horizontal, thick, thin, or diagonal and allow visualization of objects with minimal material. Silhouettes depict solid shapes matching an outline. Color theory includes primary, secondary, complementary colors and color temperature. Texture refers to surface characteristics and illusion of touch. Value relates to degrees of lightness and darkness. Balance can be symmetrical, asymmetrical, or radial. Harmony, unity, and rhythm involve relating and connecting design parts. Emphasis creates focal points through contrast, placement, or isolation.