Addend
A quantity to be Added to another, also called a Summand. For example, in the expression 
, 
, 
, and 
are all addends. The first of several addends, or ``the one to which theothers are added'' ( in the previous example), is sometimes called the Augend.
- Centroid (Geometric)
- Centroid (Orthocentric System)
- Centroid (Triangle)
- Certificate of Compositeness
- Certificate of Primality
- 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