Qualification for figuring the angles? (6)
I believe the answer is:
degree
'qualification' is the definition.
(university qualification)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for degree that I've seen before include "Level of intensity, in scale" , "displayed by small elevated circle" , "Angular unit; stage" , "Comparative amount" , "See 13" .)