Where lines meet fishes? (6)
I believe the answer is:
angles
'fishes?' is the definition.
('angle' can be a synonym of 'fish')
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for angles that I've seen before include "Attempts to catch one from school" , "Space between two lines at a corner" , "They may be acute, obtuse or right" , "eg, Right, acute, obtuse" , "Fishes with hook and bait" .)