**A**

Accuracy

Acre

Acute triangle

Add

Addend

Addition

Additive identity

Additive inverse

Addition property of inequality

Addition property of zero

Adjacent angle(s)

Adjacent side(s)

Algebra

Algebraic equation

Algebraic expression

Algebraic solution

Alternate interior angle(s)

Altitude

Analysis

Analyze

Angle bisector

Angle measure

Angle of depression

Angle of a circular segment

Angle of elevation

Angle of intersection

Angle of rotation

Angle of inclination

Angular

Application

Appraisal

Approximate

Approximate rational value

Approximate square root

Approximation

Arbitrary

Area

Area of a rectangle/circle

Argument

Arithmetic

Arithmetic mean

Array

Ascending order

Assign

Associative property of addition/multiplication

Asymmetric relation

Asymmetrical

Augment

Average

Average error

Axes

Axis

Axis of rotation

Axis of symmetry

**B**

Bar graph

Base

Base angle

Base numeral

Base of cylinder

Upper base

Lower base

Base of figure

Base of a power

Bell-shaped curve

Below

Below zero

Best approximation

Between

Biased estimator

Biased statistic

Billions (place value)

Binomial

Binomial expansion

Binomial expression

Bisect

Bisector of a segment

Bisector

Body of rotation

Border

Borrow

Bottom

Bound

Boundary

Box-and-whisker

Braces

Brackets

**C**

Conditional

Cone

Congruence

Congruent

- arcs

- angles

- circles

- figures

- line segments

- polygons

- sides

- triangles

Consecutive angles

Consecutive even integers

Consecutive integers

Consecutive intervals

Consecutive odd integers

Consecutive sides

Consecutive tangents

Consecutive vertices

Constant

Constant coefficient

Constant factor

Constant dilation

Constant term

Construct

Construction

Convert

Convert measures

Coordinate

Coordinate axes

Coordinate curve

Coordinate transformation

Coordinate plane

Coordinate geometry

Coordinates

Coplanar

Coplanar lines

Coplanar points

Corresponding

Corresponding angle(s)

Cosine

Coterminal angles

Count

Counterclockwise rotation

Counterexample

Counting principle

Counting number

Cross section

Cross product

Cube

Cube root

Cubic

Cubic number

Cubic inch

Cubic equation

Cubic centimeter

Cup

Curve

Curved line

Cylinder

Cylindrical surface

**D**

Dashed line

Data

Data table

Decade

Decagon

Deci-

Decimal

Decimal number system

Decimal part

Decimal place

Decimal point

Deck of cards

Decrease

Deduce

Degree

Degree of an angle

Degree of an equation

Denominator

Density

Dependent equations

Dependent events

Derive

Descending order

Diagonal

Diagram

Diameter of a circle, sphere

Dice

Die

Difference

Difference of two squares

Digit

Digital

Dilation

Dimension

Direct measurement

Direct proof

Direct proportion

Direct variation

Direction

Disperse

Display

Distance

Distance formula

Distance from a fixed point

Distinct

Distinct arrangements

Distinct points

Distinct roots

Distribution

Distributive property

Divide

Dividend

Divisibility

Divisible

Division

Divisor

Domain

Domain of a function

Dotted line

Dot

Dot product

Double

Double roots

Down payment

Dozen

Draw at random

Draw the figure

**E**

Edge

Element

Element in a set

Eliminate

Elimination

Encircle

Endpoint

Equal

Equal chance

Equality

Equally likely

Equally spaced points

Equation

Equiangular

Equidistance/equidistant

Equilateral

Equivalent

Equivalent equation(s)

Equivalent expression

Equivalent sets

Estimate

Evaluate

Even

Evenly distributed

Event

Exact

Exercise

Expansion of a binomial

Experiment

Explain

Exponent

Exponential

Exponential form

Exponential growth

Express

Expression

Extend

Exterior angle

Exterior region

External bisector

External point

Extract a root

Extraneous root(s)

Extreme and mean ratio

**F**

Face

Factor

Factor completely

Factor tree

Factorial

Factorization

Fahrenheit

Favorable outcomes

Feet

Fibonacci sequence

Field

Figure

Find

Finish

Finite

First quartile

First-degree equation

First-quadrant

Fixed line

Fixed point

Fixed value

Focus point

Formed by a transversal

Formula

Fourth-quadrant

Fraction

Frequency

Frequency diagram

Frequency distribution

**G**

Gallon

Generalization

Geometric

Geometry

Gram

Graph

Graphic calculator

Graphic solution

Greater than

Greatest common factor

Greatest common monomial factor

Grid

Group

**H**

Half

Half-plane

Half-turn about the origin

Heading

Hectare

Height

Heptagon

Hexagon

Hexahedron

Histogram

Horizontal

Hour

Hundred

Hundredth

Hypotenuse

Hypothesis

**I**

Illustrate

Image

Image point

Image set

Imaginary number

Imaginary root

Impossible event

Improper fraction

Inch

Included angle

Included side

Inconsistent equation

Increase

Increasing function

Increasing sequence

Increasing series

Increment

Independent event

Independent variable

Index

Index of a radical

Indirect measurement

Indirect proof

Indivisible

Induction

Inductive reasoning

Inequality

Infinite

Infinitely many

Infinity

Initial

Input

Inscribe

Insert

Integer

Integral

Intermediate value

Intercept

Interest

Interior angle

Intersect

Interval

Inverse

Inverse equation

Inverse operation

Inverse variation

Irrational number

Irrational root

Isometric

Isosceles trapezoid

Isosceles triangle

Item

**J**

Justify

**K**

Kilo-

Known quantity

**L**

Label

Lateral

Leading coefficient

Least common factor

Least common multiple

Leg

Length

Less than

Line

Line graph

Line of reflection

Line of symmetry

Line segment

Linear coordinates

Linear equation

Linear function

Linear growth

Linear inequality

Linear pair

Liter

Logic

Long division

Longitudinal axis

Loss

Lower base of cylinder

Lowest common denominator

Lowest common multiple

**M**

Magnitude

Map

Maximum

Mean

Measure

Measures of central tendency

Median

Meter

Metric

Midpoint

Mile

Milli-

Minimal

Minimum

Minor

Minuend

Minus

Minute

Mixed number

Modal

Mode

Model

Modular

Monomial

Multiple

Multiplicand

Multiplication

Multiplicity

Multiplier

**N**

Natural number

Nearest

Negation

Negative

Negative correlation

Negative reciprocal

Nonagon

Normal distribution

Notation

Null

Number

Number line

Numeral

Numerator

**O**

Obtuse

Octagon

Octahedron

Odd

One-to-one correspondence

One-to-one function

One-to-one mapping

Open expression

Open interval

Open sentence

Open set

Operation

Operator

Opposite

Order

Ordered pair

Ordinate

Origin

Ounce

Outcome

Output

**P**

Pace

Pair

Parabola

Parallel

Parallelogram

Pascalâ€™s triangle

Pattern

Pentadecagon

Pentagon

Per

Percent

Percent increase

Percent decrease

Percentage error

Percentile

Perfect square

Perimeter

Period

Perpendicular

Perpendicular bisector

Perspective

Pi

Pictograph

Picture graph

Pint

Pivoting

Place holder

Place value

Plane

Plane geometric figures

Plot

Plus

Point

Point of tangency

Point-slope-form of line

Polygon

Polyhedron

Polynomial

Positive

Positive correlation

Possibility

Pound

Power

Preceding

Prime

Principle

Prism

Probability

Profit

Proof

Proper fraction

Proper set

Proper subset

Property

Proportion

Protractor

Prove

Pyramid

Pythagorean Theorem

Pythagorean triple

**Q**

Quadrangle

Quadrant

Quadrilateral

Quantifier

Quantity

Quart

Quarter-turn

Quotient

**R**

Radius (Radii)

Random

Range

Rate

Rational

Rationalization

Raw data

Ray

Real number

Reciprocal

Rectangle

Rectangular coordinate system

Rectangular prism

Reduce

Reference angle

Reflected image

Reflection

Reflex angle

Reflexive property

Region

Regular polygon (figure)

Relation

Relationship

Relativity

Remainder

Remote interior angles

Repeating decimal

Repetend

Replacement

Restricted domain

Reverse

Rhombohedreom

Rhomboid

Rhombus

Right angle

Roman number

Root

Rotation

Rotational symmetry

Round

Row

Ruler

**S**

Sample

Scalar multiplication

Scale

Scale drawing

Scale of a graph

Scalene triangle

Scatter plot

Scattergram

Scientific notation

Second

Second quadrant

Sector

Segment

Semicircle

Sentence

Sequence

Series

Set

Shape

Side

Sign

Signed numbers

Significant digits

Similar figures (similarity)

Simplify

Sine

Sketch

Skew lines

Slant

Slant height

Slope

Slope-intercept form

Solid

Solution set

Solve

Space

Sphere

Square

Square pyramid

Square root

Standard form

Standardize

Statistics

Step function

Straight angle

Subset

Substitution

Subtraction

Sum

Summation of series

Supplement

Supplementary

Surface

Surface area

Symbol

Symmetry

System

**T**

Table

Tally

Tangent

Term

Tetrahedron

Theorem

Theoretical probability

Third-quadrant

Tonne or Ton

Transcendental

Transformation

Transitive

Translation

Transversal

Trapezoid

Trend line

Trial

Triangle

Triangular number

Triangular prism

Triangular pyramid

Trigonometry

Trihedral

Trinomial

Triple

**U**

Undefined

Unique

Unit

Universal

Unknown

Unlike terms

Upper quartile

**V**

Valid (validity)

Value

Variable

Variance

Variation

Venn diagram

Verbal

Verify

Vertex (vertices)

Vertical

Volume

**W**

Whole number

Width

**X**

x-axis

x-coordinate

x-intercept of a line

**Y**

y-axis

y-coordinate

y-intercept of a line

Yard

**Z**

Zero

Zero exponent

Zero slope