Final answer:
Using geometric forms, measuring with a pencil, and using a sectioned grid are effective methods for drawing proportions realistically when working with a three-dimensional subject.
Explanation:
Using a geometric form is the best method for drawing proportions realistically when a three-dimensional subject is in front of you. By setting up solid geometric forms to understand light and shadow, students can create accurate value drawings. This method helps in capturing proportions and dimensions effectively.
Another effective technique is to measure with a pencil, comparing sizes and angles directly on the drawing surface. This allows for precise reproduction of the subject's proportions. Utilizing a sectioned grid can also aid in accurately mapping out proportions and transferring them onto paper systematically.
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