Configurations and Theorems

Affine/Projective Plane

• Desargues' Configuration and Theorem
• Pappus' Configuration and Theorem
• Hessenberg's Theorem
• Pascal's and Brianchon's Theorems
• Cayley–Bacharach Theorem
• Stammler Triple of Conconic Triangle Pair Configuration

Commutative Field

• Harmonic Conjugation Pair and Triple Configuration
• Common Harmonic Conjugation Configuration
• Cosymmedian Triangle Pair Configuration
• Beltrami Triangle Pair Configuration
• Miquel Quadrangle Pair Configuration

Involutory Plane

• Parallelologic Quadrangle Pair Configuration and Theorem
• Orthologic Quadrangle Pair Configuration and Theorem
• Cyclologic Quadrangle Pair Configuration(=Miquel's Configuration and Theorem)
• Orthogonologic Quadrangle Pair Configuration
• Clifford's Configuration and Theorem
• Bundle Pair Quadruple Configuration and Theorem
• Isogonal Conjugation Quintangle Pair Configuration
• Incenter/Excenters Quadrangle Pair(=Gibert-Burek-Moses Involution Quadrangle Pair) Configuration
• Gibert-Burek-Moses Configuration
• Fermat Triangle Pair Configuration
• Tangential Involution Pair Configuration
• Thales-Pythagorean Pair(Right-Angled Triangle) Configuration and Theorem
• XXX Pair(Isosceles Triangle) Configuration and Theorem
• Isodynamicl Quadrangle(Equilateral Triangle) Configuration and Theorem
• Desargues' Pair Configuration and Theorem