Figure 2. Linear variables. 1, Inter-endocanthal width; 2, inter-pupil width; 3, inter-exocanthal width; 4, eye width; 5, facial width; 6, nasal width; 7, philtrum width; 8, mouth width; 9, lower-facial width; 10, total facial height; 11, facial height; 12, lower-facial height; 13, forehead height; 14, eye height; 15, nasal height; 16, ear height; 17, mouth height; 18, upper lip height; 19, lower lip height; 20, upper vermilion height; 21, lower vermilion height; 22, Cupid's bow height; 23, lower-lip-and-chin height; 24, upper lip protrusion; 25, lower lip protrusion; 26, nasal protrusion.
