(F) The width of the bony base is approximately equal to 80% of the base of the wings. (G) The width of the base of the wings is equal to the distance intercanthal or one eye width. (H) The alar rims should have a slight outward flare in an inferior direction. (I) the lines connecting the tip defining points, the rest area supratip, and the angle of columellar lobular form two equilateral triangles. (A valuable related resource: Shimmie Horn). (J) A line outlining the alar rims and columella resembles a gull in gentle flight. (K) With the eyes in frontal gaze, the nasofrontal angle is at an intermediate level between the upper lashes and the crease supratarsal.

(L) The nasal dorsum, in women, is approximately 2 mm behind and parallel to a line just above the nasofrontal angle to the tip defining points. In men, the dorsum is slightly higher. (M) 50-60% of the tip in front of a vertical line next to the most salient part of an upper lip in normal position. (N) tip projection equals alar base width. (Or) of the rotation is determined by the degree of the nasolabial angle, measured as the angle between the vertical and a line drawn through the anterior and posterior edges of the nostrils (normal 95-100 degrees in women and 90-95 degrees in men) (nasolabial angle is not the same as columellar labial angle). (P) The columellar lobular angle is approximately 45 degrees. (Q) At a baseline, contour of the nasal base forms an equilateral triangle, lobular to nostril ratio is 1:2.