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   Projective geometry

   Projective geometry is a non-metrical form of geometry, notable for its principle of duality. Projective geometry was first systematically developed by Desargues in the 17th century based upon the principles of perspective art, although it did not achieve prominence as a field of mathematics until the early 19th century through the work of Poncelet and others.
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   Category:Projective geometry

   Projective geometry Classical geometry
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   Finite projective geometry

   Coxeter, H. S. M.; Projective Geometry, 1st ed. University of Toronto Press (1974), 2nd ed. Springer Verlag (2003).
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   Quadric (projective geometry)

   In projective geometry a quadric is the set of points of a projective space where a certain quadratic form on the homogeneous coordinates becomes zero.
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   Oriented projective geometry

   Oriented projective geometry is an oriented version of real projective geometry.
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   Projective space

   This phenomenon is axiomatized and studied in projective geometry.
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   Erlangen program

   In particular, the affine, metric, and Euclidean geometries are just special and gradually more restrictive cases of the projective geometry.
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   List of geometers

   Jakob Steiner - a champion of synthetic geometry methodology, projective geometry, Euclidean geometry
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   Geometry

   The second geometric development of this period was the systematic study of projective geometry by Girard Desargues (1591–1661).
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    Ovoid (projective geometry)

    Projective geometry

Explore the following pages on Powerset:

• Projective geometry,
• Category:Projective geometry,
• Finite projective geometry,
• Quadric (projective geometry),
• Oriented projective geometry,
• Projective space,
• Erlangen program,
• List of geometers,
• Geometry,
• Ovoid (projective geometry)