English

Noun

projective plane ‎(plural projective planes)

1. (geometry) A plane in which any pair of distinct points determine a line and any pair of distinct lines intersect at a point.
   • 2004, David S. Dummit & Richard M. Foote, chapter 6, in Abstract Algebra, ISBN 0-471-43334-9, page 210:

     Generally, a projective plane of "order" N has points, and the same number of lines.