Jaw & chin measurement
Gonial Angle
The angle of the jaw, between the back edge of the ramus (Ar–Go) and the lower border of the mandible (Go–Me). Lower values give a squarer, more defined jaw; higher values a steeper, softer jaw angle.
At a glance
- Ideal
- 112–123° (men) · 114–126° (women)
- Unit
- degrees
- Weight in the overall score
- 24
- Area
- Jaw & chin
How it is measured
∠ Ar–Go–Me
- Ar Ramus point — The back edge of the jaw’s vertical branch (ramus), just below the ear lobe. It sets the upper end of the ramus line.
- Go Gonion (jaw angle) — The corner of the jaw, where the lower border turns upward toward the ear.
- Me Menton — The lowest point of the chin.
Ideal range and tiers
Each value falls into a tier (T1 = ideal). Comfortably inside T1 the rating is 10, easing to 9.5 at the edges of the ideal range; beyond it the rating falls with the deviation — fastest in the first tiers outside the ideal — down to −10 (below 0 where the original tier sheet takes points away) at the far end of the worst tier.
| Tier | Range | Rating |
|---|---|---|
| T1 Ideal | 112–123° | 9.5–10 |
| T2 Near ideal | 110–112° or 123–125° | 7.2–9.5 |
| T3 Mild deviation | 107–110° or 125–128° | 5.2–7.2 |
| T4 Moderate deviation | 104–107° or 128–131° | 3.4–5.2 |
| T5 Significant deviation | 97–104° or 131–138° | −5 to 3.4 |
| T6 Severe deviation | < 97° or > 138° | −10 to −5 |
| Tier | Range | Rating |
|---|---|---|
| T1 Ideal | 114–126° | 9.5–10 |
| T2 Near ideal | 112–114° or 126–128° | 7.2–9.5 |
| T3 Mild deviation | 109–112° or 128–131° | 5.2–7.2 |
| T4 Moderate deviation | 106–109° or 131–134° | 3.4–5.2 |
| T5 Significant deviation | 99–106° or 134–141° | −5 to 3.4 |
| T6 Severe deviation | < 99° or > 141° | −10 to −5 |