Sella	Midpoint of sella turcica
A point	Most concave point of anterior maxilla
B point	Most concave point on mandibular symphysis
Menton	Lowest point on mandibular symphysis
Nasion	Most anterior point on frontonasal suture
ANS	The anterior nasal spine
SNA (°)	Sella-Nasion-A point angle
SNB (°)	Sella-Nasion-B point angle
U1 to NA (°)	Upper incisors–Nasion-A point angle
SN to MP (°)	Sella- Nasion to mandibular plane angle
N-ANS/N-Me	Nasion-Anterior nasal spine/Nasion-Menton
ANS-Me/N-Me	Anterior nasal spine-Menton/Naion-Menton
Mandibular plane (MP)	The plane connecting Gonion to Gnathion at the inferior border of the mandible
H line	Drawn tangent to the soft tissue chin and the upper lip