Hesse's Theorem

If two pairs of opposite Vertices of a Complete Quadrilateral are pairs of ConjugatePoints, then the third pair of opposite Vertices is likewise a pair of Conjugate Points.

• Curve of Constant Slope
• Curve of Constant Width
• Curvilinear Coordinates
• Cushion
• Cusp
• Cusp Catastrophe
• Cusp Form
• Cusp Map
• Cusp Point
• Cutting
• Cut-Vertex
• CW-Approximation Theorem
• CW-Complex
• Transfinite Diameter
• Transfinite Number
• Transform
• Transformation
• Transitive
• Transitive Closure
• Transitive Reduction
• Transitivity Class
• Translation
• Translation Relation
• Transpose
• Transpose Map