Final answer:
The basilar angle, used to assess cranial morphology, is formed by lines from nasion to Sella turcica and Sella turcica to basion; normally, it's under 152 degrees, but a higher angle suggests platy Basia.
Step-by-step explanation:
The basilar angle is an anatomical measurement used to evaluate cranial base morphology. It is the angle formed by the intersection of a line drawn from the nasion (the midpoint of the nasofrontal suture) to the center of the Sella turcica (a depression in the sphenoid bone that holds the pituitary gland) with a line from the center of the Sella turcica to the basion (the midpoint of the anterior margin of the foramen magnum). Typically, a normal basilar angle is less than 152 degrees. If the basilar angle is greater than 152 degrees, it can be indicative of platybasia, which is a flattening of the base of the skull that can lead to neurological complications.