Shading Techniques
Shading enables you to transform mere lines and shapes in your drawing into three-dimensional objects. As you read through this book, note how the words shape and form are used. Shape refers to the actual outline of an object, while form refers to its three-dimensional appearance. See the examples in this section.
This is an oval shape.
This has a three-dimensional, ball-like form.
The diagram here illustrates the various shapes ...
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