Which term describes the use of primary flowers to establish the skeleton outline of a design?

The use of primary flowers to establish the skeleton outline of a floral design is accurately described as line flowers. Line flowers are characterized by their long, linear shapes that create structure and guide the eye through the arrangement. These flowers serve as the foundational elements that define the overall shape and size of the design, establishing a framework upon which other elements, such as focal flowers or filler flowers, can be added.

In contrast, focal points refer to the dominant flower or element that attracts attention within a design, while interpretive design involves a creative representation of a theme or concept through floral arrangements. Cascade design typically refers to a style where flowers flow downward in an elegant manner, rather than focusing on the structural aspect of the arrangement. Therefore, understanding the role of line flowers helps to appreciate how they contribute to the overall composition and balance within floral designs.