It is using Method 1 and Method 2 for consideration. It is to look at the culet from the top angle and then compare the width of each culet. If the width of the culet is the longest, then the culet is the largest.
The first and second methods are to view the cutlets from the top and compare the width of each cutlet. If a cullet has the longest width, then the cullet is the largest.
When method 1 is combined with method 2, the culet is viewed from the top, and then the wide edges of each culet are compared. If the width of culet is the longest, it means culet is the largest.