Inconsistent Equation

Inconsistent Statistical Data

Increasing Function

Increasing Sequence

Independent Events

Independent Variable

Indeterminate Equation

Index

Inequality

Infinite Set

Infinity

Inflection Point

Inscribed Angle

Integer

Integral Divisor

Intensional Definition of a Set

Interest Rate

Interior Angle of a Circle

Interior Angle of a Convex Polygon

Interior Angles

Interior of a Conic Section

Internal Composition Law on a Set E

Internal Operation

Interpolation

Interquartile Deviation

Interquartile Interval

Interquartile Range

Intersecting Lines

Intersecting Node

Intersecting Planes

Intersection of Geometric Figures

Intersection of Sets

Intersection of Two Lines

Interval

Invariant

Inverse

Inverse Element

Inverse Function

Inverse of a Number

Inverse Operation

Inverse Pairs

Inverse Proposition

Inverse Variation

Inversely Proportional Quantities

Invertible

Invertible Function

Invertible Matrix

Investment

Irrational Equation

Irrational Number

Is Greater Than

Is Less Than

Isometric Perspective

Isometric Projection

Isometry

Isosceles Polygon

Isosceles Right Triangle

Isosceles Trapezoid

Isosceles Triangle

Iteration

Johann Rahn (1622-1676)

Johannes Widmann (1460-1498)

John Napier (1550-1617)

John Venn (1834-1923)

John Wallis (1616-1703)

Karl Weierstrass (1815-1897)

Katherine Johnson (1918- …)

Kilogram

Kilometre

Kite

Lateral Area of a Solid

Lateral Face

Lateral Surface

Latitude

Lattice

Latus Rectum

Law

Law of Composition

Law of Signs

LCM

Least Integer Function

Leg Of A Right Triangle

Lemma

Length

Leonardo Fibonacci (~1180-1250)

Leonhard Euler (1707-1783)

Lewis Carroll (1832-1898)

Like Terms

Limit of a Function

Limit of a Number Sequence

Limit of a Statistical Class

Limit of a Variable

Line

Line Mapping Corresponding Points in a Geometric Transformation

Line of Reflection

Line of Regression

Line of Symmetry

Line Segment

Linear Combination

Linear Correlation