Harmony · Side view · Nose
Nasomental Angle
The angle at the nose tip between the nasal-root line and the chin line.
What is measured
The calculation
Angle: nasion → pronasale → pogonion
Side view / Measurement guide
Follow the measurement
Dots mark the landmarks. Lines show how the measurement is taken.
In these guides, 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
It relates the nose and chin directly. This can explain why changing chin projection alters profile balance even though the nose itself is unchanged.
- Lower: a more closed root–tip–chin angle.
- Higher: a more open relationship at the tip.
Where the idea comes from
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. [1]
A worked example
Two profiles may share the same nose, but a different chin point can give 125° in one and 135° in the other.
Example values explain the calculation. They are not a target range and are not measurements of the schematic above.
Research & further reading
The sources below explain the history or related evidence. FaceIQ’s score weights and reference ranges are model settings; these papers do not collectively validate the scoring system.
[1] Tavakoli et al. · 2023
Ideal Nasal Preferences: A Quantitative Investigation with 3D Imaging in the Iranian PopulationAsked 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.