Rigby Points
The Perspective Centers of the Tangential and Contact Triangles of theinner and outer Soddy Points. The Rigby points are given by
where
is the Incenter and Ge is the Gergonne Point.See also Contact Triangle, Gergonne Point,Griffiths Points, Incenter, Oldknow Points, Soddy Points, Tangential Triangle
References
Oldknow, A. ``The Euler-Gergonne-Soddy Triangle of a Triangle.'' Amer. Math. Monthly 103, 319-329, 1996.
- Cesàro Equation
- Cesàro Fractal
- Cesàro Mean
- Ceva's Theorem
- Cevian
- Cevian Conjugate Point
- Cevian Transform
- Cevian Triangle
- Chain
- Chained Arrow Notation
- Chainette
- Chain Fraction
- Chain (Graph)
- Chain Rule
- Chair
- Chaitin's Constant
- Chaitin's Number
- Chaitin's Omega
- Champernowne Constant
- Change of Variables Theorem
- Chaos
- Chaos Game
- Character (Group)
- Characteristic Class
- Characteristic (Elliptic Integral)