In 2006, Lenchner and Bronnimann showed that in the affine plane, given n lines, not all parallel and not all passing through a common point, there had to be at least ordinary points. The present paper improves on this result to show that there must be at least
ordinary points, except for a single arrangement of 6 lines with one ordinary point.
By: Jonathan Lenchner
Published in: RC24283 in 2007
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