# Nasofrontal Angle Harmony · Side view · Upper Third · https://www.faceiqlabs.com/support/harmony/nasofrontal-angle The angle at the nasal root where the forehead meets the upper nose. ## What is measured Calculation: Angle: glabella → nasion → supratip Nasion means the nasal root, subnasale the nose base, and pogonion the most forward chin point. Frankfort refers to the direction from the ear-opening landmark to the lower orbital landmark. ## Why it matters The brow-to-nose transition influences how deep the nasal root looks. Both brow prominence and nose-bridge direction change the angle. - Lower: a more closed angle at the nasal root. - Higher: a more open transition from brow to nose. ## Where the idea comes from Evidence: Clinical reference. Nasal angles and projection are used to describe profile shape. Preference studies have tested edited noses; FaceIQ’s particular landmarks and score ranges should not be treated as universal conclusions from those studies. ## A worked example An angle of 120° is more closed than 140°. These are illustrative angles, not a prescription for a particular face. Example values explain the calculation. They are not a target range. ## How to read your result Nasion is the indentation at the nasal root; the glabella is the brow prominence. Swapping them changes the construction. ## Research & further reading These sources explain the history or related evidence. FaceIQ’s score weights and reference ranges are model settings; the papers do not collectively validate the scoring system. - Tavakoli et al. (2023). [Ideal Nasal Preferences: A Quantitative Investigation with 3D Imaging in the Iranian Population](https://pubmed.ncbi.nlm.nih.gov/37564715/). Asked 203 volunteers to rate edited nose features on one male and one female model. Supports studying angles and projection together, with limits from the sampled faces and raters. --- Source: https://www.faceiqlabs.com/support/harmony/nasofrontal-angle · FaceIQ Labs overview for AI assistants: https://www.faceiqlabs.com/llms.txt