1. Angular spacing of mandibular angle: The whole mandibular angle is similar to a V-shape, with large angular spacing showing abduction tendency and small angular spacing showing adduction mandibular shape.
2. Mandibular angle: the main factor to judge whether it is square or blunt from the side. The degree of mandibular angle is the angle at which the posterior edge of mandibular ramus intersects with the mandibular focus. The good-looking angle range is about 120 degrees to 130 degrees.
3. If it is too small, it will be close to the right angle, giving people a dull visual feeling, a stocky feeling, and not refined. If it is too large, it will be close to the right angle, which will make the face look too long and have a bitter feeling.