Question

I need an answer. We know that the strainght lines are parallel. How can we say that in the given figure arcs AB and BC are not parallel. I hv made these arcs with same center but different radii.
If thry are not parallel then why?
(I dont want the answers saying that only straight lines are parallel)

Answer 1

parallel lines never meet each other . but when this arcs are further produced they meet each other forming a circle

Answer 2

parallel lines are lines which do not meet and straight lines are continues