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Canon 1. The head-face height is in two equal parts. Vertex – endocanthion – gnathion
Canon 2. Combined forehead – face height is in three equal parts. Trichion(hairline) – nasion(glabella) – subnasale – gnathion
Canon 3. Combined head – face height is divided into four equal parts. Vertex – trichion – nasion/glabella – subnasale – gnathion.
Canon 4. Length of the nose equals the length of the ear.
Canon 5. Interocular distance equals the width of the nose.
Canon 6. Interocular distance equals the length of the orbital fissure.
Canon 7. Width of the mouth is 1.5 times width of the nose.
Canon 8. Width of the nose and eye is 1/5 the width of the face.
Canon 9. The inclination of the nasal bridge parallels the long medial axis of the ear.
not entirely accurate (Farkas)
1.Vx—endocanthion distance> endocanthion—gnathioin distance in most
2. Nasion—subnasale < Trichion—nasion and Nasion—subnasale < subnasale—gnathion
3. gnathion—subnasale > subnasale—glabella > trichion—vertex > trichion—glabella
4. nose length < ear length
5. interoccular distance < nasal width (alar) in 1/3 and > in 1/5
6. interoccular distance > palpebral fissure in most
7. width of mouth is > 1.5x width nose in 60%
8. width of nose < or > ¼ width of face in most
9. inclination of nasal bridge exceeds tilt of medial axis ear in most
The canon face is different to the modern face, especially in the forehead.
Brachycephalic – short and wide
Dolichocephalic – long and narrow
Mesocephalic – medium length and width
 
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