Brianchon's theoremW
Brianchon's theorem
Cayley–Bacharach theoremW
Cayley–Bacharach theorem
Desargues's theoremW
Desargues's theorem
Pappus's hexagon theoremW
Pappus's hexagon theorem
Pascal's theoremW
Pascal's theorem
Qvist's theoremW
Qvist's theorem
Segre's theoremW
Segre's theorem
Steiner conicW
Steiner conic