Diagonal lines in a haircut blend long layers into short layers and create?

In haircutting, diagonal lines are essential for creating a smooth transition between different lengths. When diagonal lines are used to blend long layers into short layers, they serve to enhance the hairstyle's overall shape and texture. This blending technique allows the hair to flow seamlessly, which contributes to a feeling of fullness in the hairstyle.

Fullness is created as the diagonal lines add volume and body by layering the hair in a way that avoids harsh lines. This technique allows for the hair to appear more dimensional and lively. While other options like movement and angles are related to certain effects within a haircut, the specific result of blending long and short layers through the use of diagonal lines primarily focuses on achieving fullness in the overall look. Thus, the answer accurately reflects the primary goal of using diagonal lines in this context.