222 Interiors Copyright Goodheart-Willcox Co., Inc. while large upward curves suggest gentle relaxation. Too many curved lines ■ become tiresome or too ornate ■ make people feel seasick (perceptually) ■ communicate instability and fussiness A balanced use of line—as a design element—creates a feeling of comfort and cohesiveness in a space. In interior design practice, designers also use lines for such things as sketches and floor plans, Figure 8-7. Shape When the beginning and end points of any line meet, a shape is created. You can see shapes in nature and within interior spaces. Shapes ■ are two dimensional ■ are angular and sharp or curved and rounded ■ become a pattern when repeated There are several categories of shapes. Geometric shapes suggest order and regularity. They include circles, triangles, rectangles, and squares, Figure 8-8. Builder: Woodmont Properties/Photographer: Fred Forbes/Designer: Lita Dirks & Co. Figure 8-6 Diagonal lines create a feeling of movement. How does the designer use diagonal lines in this space? takito/Shutterstock.com Figure 8-7 Interior designers use all types of lines in creating floor plans. How many types of lines can you identify on this plan?