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