Convex Polyhedron

Convex Quadrilateral

Convex Solid

Convexity

Coordinate

Coordinate System

Coordinates of a Point

Coplanar

Coplanar Lines

Coplanar Points

Corollary

correlation

Correlation Table

Corresponding

Corresponding Angles (Lines Cut by a Transversal)

Corresponding Angles (Similar Figures)

Corresponding Elements

Corresponding Sides

Cosecant Function

Cosecant of an Angle

Cosine Function

Cosine Law

Cosine of an Angle

Cost Price

Cotangent Function

Cotangent of an Angle

Countable Set

Counter-Clockwise Direction

Counting

Cramer’s Rule

Criterion

Critical Path

Cryptarithm

Cube

Cube Number

Cube of a Number

Cube Root Function

Cube Root of a Real Number

Cubic Centimetre

Cubic Decimetre

Cubic Function

Cubic Metre

Curvature

Curve

Curved line

Cycle

Cylinder

Cylinder of Revolution

Cylindrical Surface

Day

De Morgan’s Laws

Decade

Decagon

Decahedron

Decalitre

Decametre

Decile

Decilitre

Decimal Expansion of a Number

Decimal Fraction

Decimal Notation

Decimal Number

Decimal Number System

Decimal Numeral System

Decimal Part of a Real Number

Decimal Place

Decimal Point

Decimal Sequence

Decimetre

Decomposable Solid

Decomposition

Decomposition of a Number

Decomposition of a Polynomial

Decreasing

Decreasing Function

Decreasing Sequence

Deficient Number

Degree of a Monomial

Degree of a Polynomial

Degree of a Vertex of a Graph

Degree of an Angle

Deltahedron

Deltoid

Denominate Number

Denominator

Dependent Events

Dependent Variable

Descending Order

Descriptive Statistics

Determinant

Deviation

Diagonal

Diagonal Matrix

Diagonal of a Polygon

Diagonal of a Polyhedron

Diagram

Diameter

Diameter of a Graph

Difference

Difference (in Arithmetic Sequence)