Linked from

The 12 pages that link to Desargues's theorem, each with the reason it gives.

• Projective geometryRelated: It captures a central incidence relation that holds in projective planes.

• Projective planeRelated: Its validity distinguishes important classes of projective planes.

• Parallel linesRelated: Its configurations connect parallel lines with projective incidence.

• Pascal's theoremRelated: It exemplifies the incidence principles used in synthetic projective proofs.

• Complete quadrilateralRelated: Its projective incidence viewpoint helps explain why the configuration’s theorems persist under projection.

• Projective dualityRelated: Its point-and-line formulation has a dual theorem obtained by exchanging those roles.

• Menelaus's theoremRelated: It generalizes a striking pattern of collinearity in triangle configurations.

• Girard DesarguesBroader topic: This theorem is the best-known result associated with his name.

• Pappus's hexagon theoremRelated: It offers a related incidence theorem that can help explain Pappian collinearity.

• Clifford's circle theoremsCompared with: Its incidence conclusion is collinearity, contrasting with Clifford's concyclicity.

• Monge's theoremRelated: It provides a wider incidence-geometric parallel to the theorem's collinearity conclusion.

• Thomsen's theoremRelated: It expresses a central incidence principle behind compositions of perspectivities.