Relier Pairs Design Elements #1Version en ligne Test your knowledge of the basic elements of hair design. par Rosalind Carter 1 vertical lines 2 Contrasting lines 3 parallel lines 4 diagonal lines 5 directional lines 6 Transitional lines 7 single lines 8 Horizontal lines 9 curved lines Used in the one-length hairstyle. Move in a circular or semi-circular direction. Repeating lines in a hairstyle. Create length and height in hair design. Lines with a definite forward or backward movement. horizontal and vertical lines that meet at a 90-degree angle. create width in a hairstyle. curved lines that are used to blend and soften horizontal or vertical lines. Often used to emphasize or minimize facial features.