Difference Between Two Numbers

Difference of Sets

Digit

Digital Product

Digital Root

Digital Sum

Dihedral Angle

Dilation in a Cartesian Plane

Dimension

Dimension of a Table

Dimension of a Vector Space

Dimensions of a Matrix

Dimetric Perspective

Dimetric Projection

Direct Isometry

Direct Variation

Direct Variation Function

Directed Graph

Directed Line

Directed Line Segment

Direction of Rotation

Directrix

Discontinuity

Discount

Discrete Random Variable

Discriminant of a Second-Degree Equation

Disjoint

Disjoint Sets

Disjunction

Dispersion

Dispersion Parameter

Disphenoid

Distance

Distance Between a Point and a Line

Distance Between Two Parallel Lines

Distance Between Two Points on a Cartesian Plane

Distance Between Two Points on a Line

Distance in a Graph

Distance of a Vertex in a Graph

Distribution

Distribution Function of a Random Variable

Distribution Function of a Statistical Variable

Distribution Table (Or Frequency Table)

Distributive Operation

Distributive Property

Divergent Sequence

Dividend

Dividing Fractions

Dividing Real Numbers

Dividing Whole Numbers

Divisibility

Divisibility Criterion

Divisibility Rule

Divisible

Division

Division Equation

Divisor

Dodecagon

Dodecahedron

Domain

Domain of a Function

Duration

e (constant)

Eccentricity of a Conic Section

Eccentricity of a Vertex in a Graph

Economic Function

Edge

Edge of a Geometric Solid

Edge of a Graph

Edge of a Polygonal Chain

Element in a Set

Elementary Chain

Elementary Circuit

Elementary Cycle

Elementary Event

Elementary Path

Eleven

Ellipse

Ellipse in a Cartesian Plane

Empty Set

Enlargement

Enneagon

Enumeration

Equal Sets

Equality

Equation

Equation of a Line

Equiangular

Equiangular Polygon

Equidistant

Equilateral

Equilateral Hyperbola

Equilateral Polygon

Equilateral Triangle

Equipollence

Equipollent Bipoints

Equipotent Sets

Equiprobable Events

Equivalence

Equivalence Class