continued fraction
or, in a form that is easier to print,
If the continued fraction terminates, it gives a rational number. The expression of any given positive rational number as a continued fraction can be found by using the Euclidean algorithm. For example, 1274/871 is found, by using the steps which appear in the entry on the Euclidean algorithm, to equal
When the continued fraction continues indefinitely, it represents a real number that is the limit of the sequence
and every real number can be uniquely represented by a continued fraction. For example, representation of 
as a continued fraction is
- correction
- correlation
- correlation matrix
- correspondence
- corresponding angles
- cosecant
- cosech
- coset
- coset
- cosine
- cosine rule
- cotangent
- coth
- count
- countable
- countably infinite
- counterexample
- counting numbers
- counts
- couple
- coupled equations
- covariance
- covariance matrix
- covariant derivative
- covariant functor