Final answer:
Three-sectioning is an effective way to measure the proportions of the entire body shape in art.
Step-by-step explanation:
The technique of three-sectioning is commonly used in art to measure the proportions of the entire body shape. By dividing the body into three equal sections - the head, torso, and legs - artists can create accurate and realistic representations of human figures. This technique helps maintain proper proportions and balance in the artwork.