Once the shape is created with perfect symmetry, other distortions and transformations can help you create additional shapes and effects, such as creating perspective or distortion. Shapes can also be combined in combinations to create complex shapes. They can be used, for example, to help standardize Web buttons and appearances.
With symmetrical shapes created, there is no reason why the development needs to stop there. Shapes can be filled; applying filters, effects, and/or Layer Styles can help you use even simple shapes in very creative ways.
If you aren't clear about any of the techniques or ideas described in this article, you can find out more by referring to Special Edition Using Adobe Photoshop 6, as follows:
Creating Vector Paths with the Pen Tool: p. 178184
Path Management: p. 185188
Aligning Path Segments: p. 189[nd192
Getting Paths from Other Sources: p. 192194
Stroking and Filling Paths: p. 196198
Clipping Paths: p. 188189
Layer Clipping Paths: p. 6264