Landmarks: Cg = crista galli; LoR = lateroorbitale point, right; LoL = lateroorbitale point, left; Me = menton; AgR = antegonion, right; AgL = antegonion, left.
Reference lines: LoR-LoL = lateroorbital line; FM = facial midline; AM = actual midline.
Measures - linear: FHR = facial height, right = distance from AgR perpendicular to LoR-LoL; FHL = facial height, left = distance from AgL perpendicular to LoR-LoL.
Measures - angular: CA = chin asymmetry = deviation of AM from FM.