could you accept "horizon " to describe what most of us call the "edge" of the ball??
if you look across a distance you see the horizon which is why for along time the earth was thought to be flat but we know its not flat (neither is the cue ball)
but there is a horizon on the earth (or an "edge"of the cue ball as most of us call it)

if you look across a distance you see the horizon which is why for along time the earth was thought to be flat but we know its not flat (neither is the cue ball)
but there is a horizon on the earth (or an "edge"of the cue ball as most of us call it)

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