What term identifies the points on the head that help establish proportional design lines for a haircut?

The term that identifies the points on the head that help establish proportional design lines for a haircut is reference points. In the context of hair cutting, reference points are critical as they serve as landmarks that guide the stylist in achieving the desired shape and balance of the haircut. These points are usually identified by the natural contours of the head, such as the crown, occipital bone, and the jawline, and they help in measuring and determining the angles at which the hair will be cut.

Using reference points allows for consistency and precision, as they create a visual framework for the stylist to follow. This ensures that the hairstyle will look proportional and structured, accommodating different hair types and textures effectively. Understanding how to utilize these points is essential for achieving well-balanced haircuts that suit the client's facial shape and style preferences.