Tetrahedral Graph
A Polyhedral Graph which is also the Complete Graph 
.
- Chi-Squared Distribution
- Chi-Squared Test
- Choice Axiom
- Choice Number
- Cholesky Decomposition
- Choose
- Choquet Theory
- Chord
- Chordal
- Chordal Theorem
- Chow Coordinates
- Chow Ring
- Chow Variety
- Christoffel-Darboux Formula
- Christoffel-Darboux Identity
- Christoffel Formula
- Christoffel Number
- Christoffel Symbol of the First Kind
- Christoffel Symbol of the Second Kind
- Chromatic Number
- Chromatic Polynomial
- Chu Identity
- Church's Theorem
- Church's Thesis
- Church-Turing Thesis