- #1
r0bHadz
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Homework Statement
Show that n lines separate the plane into (n^2+n+2)/2 regions if no two of these lines are parallel and no three pass through a common point
Homework Equations
The Attempt at a Solution
Look at my picture. The one on the left separates into 4 reigions, the one on the right separates into 3. Yet using the same n=2 lines. I don't understand