In the Terrell Root technique and analysis, we select a treatment objective. This goal is represented schematically by an ideal chevron. The choice of chevron is determined by the anteroposterior and vertical skeletal discrepancies. There exist three main skeletal patterns corresponding to our three main goals. These patterns induce the desired position of the lower incisors. Using clinical examples, we will demonstrate that this position is related to the value of the ANB angle.