Final answer:
The major proportional division of the face is measured from the hairline to the base of the nose, representing one-third of the total face height. This measurement helps artists accurately depict the size and placement of facial features.
Step-by-step explanation:
The major proportional division of the face is measured from the hairline to the base of the nose. This measurement is known as the face's vertical proportion. In most people, this division is approximately one-third of the total face height, with the other two-thirds representing the distance from the base of the nose to the chin. This proportion helps artists accurately depict the size and placement of facial features.
For example, when painting a portrait, artists often use the distance from the hairline to the base of the nose to determine the size and position of the eyes, nose, and mouth. By understanding the vertical proportion of the face, artists can create a realistic and proportionate representation of the subject.