K - 12

A

abacus

abscissa

absolute convergence

absolute error

absolute inequality

absolute maximum

absolute minimum

absolute value

absolute value (complex number)

accuracy

acre

acute angle

acute triangle

add

addend

addition

addition (of complex numbers)

addition (of fractions)

addition (of matrices)

addition (of vectors)

addition formula

addition property of opposites

addition sentence

additive identity

additive inverse

adjacent angles

adjacent faces

adjacent side (in a triangle)

adjacent sides

admissible hypothesis

after

algebra

algebraic expression

algebraic operating system (AOS)

algorithm

alternate exterior angles

alternate interior angles

alternating series

altitude (of a plane figure)

altitude (of a solid figure)

ambiguous

ambiguous case

amplitude

analog clock

analogy

analysis

analytical geometry (coordinate geometry)

anchor ring

and

angle

angle (between two curves)

angle (in space)

angle of inclination

angle-side-angle (ASA)

annually

annulus (plural annuli)

antecedent

anticlockwise

antiderivative

antilogarithm

apothem

arc

arc length

arc sech

arc sinh

arc tanh

arc-

arccos (arc cosine)

arccsc (arc cosecant)

arcctn (arc cotangent)

arcsec (arc secant)

arcsin (arc sine)

arctan (arc tangent)

area

area of a circle

area of a parallelogram

area of a square or a rectangle

area of a trapezoid

area of a triangle

area of an ellipse

Argand diagram

argument (algebra)

argument (complex number)

argument (in logic)

arithmetic

arithmetic mean

arithmetic progression

arithmetic sequence

arithmetic series

array

associative

associative property of addition

associative property of multiplication

asymmetric

asymptote

atto-

attribute

average

axial plane

axiom (postulate)

axis (in solid geometry)

axis (in symmetry)

axis (plural axes)

azimuth (three-dimension)

azimuth (two-dimension)

B

balance

bar chart

bar graph

base (in a number system)

base (in an exponent)

base (in plane geometry)

base (in solid geometry)

base (of an exponential function)

base (of logarithms)

base unit

basis vectors

bearing

before

benchmark number

Bernoulli trial

between

between (in geometry)

beva-

bias

biased sample

biconditional

bilateral symmetry

billion

bimodal

binary logarithm

binary number

binary operation

binomial

binomial coefficient

binomial distribution

binomial expansion

binomial theorem

birectangular

bisect

bisector

Boolean algebra

bound

box and whisker plot

brackets

breadth

C

calculate (compute)

calculator

calculus

calculus of variations

calendar

cancel

capacity

cardinal number

cardioid

Cartesian coordinate system

Cartesian product (of sets A and B)

categorical data

catenary

cell

Celsius

census

cent

center

center (of a circle)

center (of a hyperbola)

center (of a regular polygon)

center (of a sphere)

center (of an ellipse)

centimeter (cm)

central angle

central tendency

centroid

certain

chain rule

characteristic (in logarithm)

characteristic (in set)

chord

circle

circle graph

circular cone

circular cylinder

circular functions

circumference

circumscribe

circumscribed circle

class (in algebra)

class interval

classify

clockwise

closed (under an operation)

closed curve (closed contour)

closed figure

closed interval

closed set

closed surface

clustering

coefficient (in algebraic expressions)

collinear

column

combination

commission

common denominator

common difference

common factor (in algebra)

common factor (in arithmetic)

common fraction

common logarithm

common multiple

common ratio

common tangent

commutative

commutative property of addition

commutative property of multiplication

compass

compasses

compatible numbers

complement (of a set)

complementary angles

completing the square

complex fraction

complex number

complex plane

component

composite function

composite number

composition

compound event

compound interest

compound sentence (in logic)

computation

concave

concentric circles

concentric spheres

conclusion

concurrent lines

conditional convergence

conditional statement

cone

congruent

congruent figures

congruent polygons

conic sections

conical

conjecture

conjugate angles

conjugate of a complex number

conjunction

consecutive

consequent (in logic)

constant

construct (in geometry)

construction (in geometry)

continuous data

continuous function

continuous random variable

convenience sample

converge

convergent sequence

convergent series

converse

Converse of the Pythagorean Theorem

conversion factor

conversion graph

conversion table

convert

convex

coordinate geometry

coordinate plane

coordinates

coplanar

corner

corollary

correction

correlation

corresponding angles

corresponding sides

cos

cosec

cosecant (cosec or csc)

cosech

cosh

cosine (cos)

cosine rule

cot

cotangent (cot)

coth

count back

count on

counterclockwise

counterexample

counting numbers

cross multiply (cross products)

cross section

csc

cube (in algebra)

cube (in geometry)

cube root

cubic centimeter (cm3)

cubic equation

cubic meter (m3)

cubic unit

cuboid

cumulative frequency

cup (c)

curvature

curve

customary measurement system

cycle

cyclic polygon

cyclic quadrilateral

cycloid

cylinder

cylindrical

cylindrical polar coordinates

D

data

data analysis

day

De Moivre´s theorem

deca-

decagon

decahedron

deci-

decimal

decimal fraction

decimal number

decimal number system

decimal places (in rounding)

decimal point

decimeter

decomposition

deduce

deduction

deductive reasoning

definite integral (Riemann integral)

definition

degree (°)

degree (in physics)

degree (of a polynomial)

degree (of accuracy)

degree (of an equation)

degree (related to a variable)

degrees Celsius (°C)

degrees Fahrenheit (°F)

degrees of freedom

denominator

density property

density property for Real Numbers

denumerable set

dependent event

dependent variable

deposit

depth

derivative

derived unit

determinant

developable surface

deviation

diagonal (polygons)

diagonal (solids)

diagonal matrix

diagram

diameter of a circle

diameter of a sphere

difference

difference between two squares

differential

differential equation

differentiation

digit

digital root

dihedral angle

dilation

dime

dimension (in geometry)

dimension (of a matrix)

direct variation

directed number

direction (of a curve)

direction (of a vector)

directrix

discount

discrete

discrete data

discrete methods

discrete random variable

discriminant

disjoint

dispersion (in statistics)

displacement vector

distance (between two points)

distance formula (of two points)

distance-time graph

distributive

distributive operation

distributive property of multiplication over addition

diverge

divergent sequence

divergent series

divide

dividend

divisible

division

division of fractions

division sentence

divisor

dodecagon

dodecahedron

dollar

domain

domain of a relation

domain of a variable

double

double bar graph

double minus one

double plus one

double-angle formula

draw

duodecimal system

E

e

eccentric

eccentricity

edge

elapsed time

element (in algebra)

element (in geometry)

elimination

ellipse

ellipsoid

empirical statement

empty set (null set)

enlargement

enumerable

envelope

epicycloid

equal

equal groups

equal parts

equality (of complex numbers)

equality (of matrices)

equality (of real numbers)

equality (of sets)

equality (of vectors)

equally likely

equation

equiangular triangle

equilateral

equilateral triangle

equivalent

equivalent decimals

equivalent fractions

equivalent ratios

Eratosthenes´ sieve (sieve of Eratosthenes)

error

estimate

Euclidean algorithm

Euclidean geometry

Euler´s formula (eix)

Euler´s formula (for polyhedron)

evaluate

even function

even number

event

exceed

exception

exclusive (of events)

expand (in algebra)

expanded form

expected value (expectation)

experiment

experimental probability

exponent

exponential function

exponential series

expression

extend

exterior angle

extrapolation

F

face

fact family

factor (in algebra)

factor (in arithmetic)

factor theorem

factor tree

factorial (of an integer)

factorization

Fahrenheit scale

fair

family

Fermat´s last theorem

fewer

Fibonacci numbers

Fibonacci sequence

figurate numbers

figure

finance charge

finite

finite set

first order differential equation

first quartile

flip

flowchart

focus (ellipse)

focus (hyperbola)

focus (parabola)

foot (ft)

formula

four-color problem

fractal

fractal geometry

fraction

frequency

frequency table

frustum of a cone

frustum of a pyramid

function

fundamental counting principle

fundamental theorem of algebra

fundamental units

G

gallon (gal)

Gaussian distribution

general form (of an equation)

generator

geodesic

geometric mean

geometric probability

geometric progression

geometric sequence

geometric series

geometry

glide-reflectional symmetry

Goldbach´s conjecture

golden cut

golden ratio

golden rectangle

golden section

goniometer

gradient

gram (g)

graph

great circle

greater than (>)

greatest common factor (GCF)

greatest possible error (GPE)

greatest upper bound

grid

gross (profit)

gross weight

group

grouping property of addition

grouping property of multiplication

H

half

half-angle formula

half-dollar

half-hour

halve

harmonic mean

harmonic sequence (harmonic progression)

harmonic series

HCF

hecto-

height

helix

hemisphere

heptagon

Hero´s formula

hexadecimal

hexagon

hexahedron

highest common factor

histogram

horizon line

horizontal

horizontal bar graph

hour

hour hand

hundred

hundredth

hyperbola

hyperbolic functions

hyperboloid

hypocycloid

hypotenuse

hypothesis

I

icosahedron

identity

identity property of addition

identity property of multiplication

identity property of one

identity property of zero

image

imaginary number

immediate recall

imperial units

imply

impossible

improper fraction

inch (in.)

incircle (inscribed circle)

include

increase

increasing pattern

increment

indefinite integral

independent event

independent variable

indeterminate equation

indeterminate form

index (plural indices)

indirect measure

indirect measurement

induction (mathematical induction)

inductive reasoning

inequality

inference

infinite sequence

infinite series

infinite set

infinitesimal

infinity

inscribed

inscribed circle

inside

integer

integral

integral exponent

integrand

integration

intercept

interest

interior angle

interpolation

interquartile range

intersecting lines

intersecting planes

intersection (in set theory)

intersection point

interval

invariant

inverse (of a matrix)

inverse element

inverse function

inverse hyperbolic functions

inverse operations (opposite operations)

inverse property of addition

inverse property of multiplication

inverse trigonometric functions

irrational number

irregular polygon

isometric transformation

isosceles triangle

iterated integral (multiple integral)

iteration

J

join

joule

justify

K

key

kilo-

kilogram (kg)

kiloliter (kL)

kilometer (km)

kite

knot

L

lateral face

latitude

law of cosines

law of exponents

law of sines

law of tangents

LCD

LCM

least common denominator (LCD)

least common multiple (LCM)

least squares method

least upper bound

leg

length

less than (<)

like terms

limit

line

line graph

line of best fit

line plot

line segment

line symmetry

linear equation

linear function

linear programming

liter (L)

local maximum (relative maximum)

local minimum (relative minimum)

locus

log

log-log graph

logarithm

logarithmic function

logic

longitude

lower bound

lower extreme

lowest common denominator (LCD)

lowest common multiple

M

macro-

magic square

magnitude

major arc

major axis (of an ellipse)

major sector

majority

Mandelbrot set

manipulatives

mantissa

map scale

mapping

markup

mass

mathematical situation

matrix

maximum point

mean (average)

mean (of a random variable)

mean deviation

measure

measures of central tendency

median

median (in geometry)

mediator

mega-

mental computation (mental math)

meridian

meter (m)

metric system

micro-

midpoint

mile (mi)

milli-

milligram (mg)

milliliter (mL)

millimeter (mm)

million

minimum point

minor arc

minuend

minus sign

minute (min)

minute (of an angle)

minute hand

mixed decimal

mixed number

Mobius strip (Mobius band)

mode

model

modulus

monomial

month

more than

multiple

multiple-bar graph

multiple-line graph

multiplicand

multiplication

multiplication of fractions

multiplication property of zero

multiplication sentence

multiplicative inverse

multiplier

multiply

mutually exclusive

N

natural logarithm

natural numbers

nautical mile

negative

negative correlation

negative direction

negative integer

negative number

negative slope

net

net (in geometry)

network

nickel

no correlation

non-Euclidean geometry

non-standard measurement

nonagon

nonlinear function

normal

normal distribution (Gaussian distribution)

null matrix (zero matrix)

number

number line

number sentence

number theory

numeral

numerator

numerical analysis

numerical expression

O

o´clock

oblique angle

oblique cone

oblique coordinate system

oblique cylinder

oblique lines

oblique prism

oblique pyramid

oblique solid

oblique triangle

obtuse angle

obtuse triangle

octagon

octahedron

octal

odd function

odd number

odds

on

one-dimensional

one-to-one correspondence

ones

open curve

open figure

open interval

open sentence

open set

operation

opposite operations

opposite side

opposites

order

order of operations

order property of multiplication

ordered pair

ordered set

ordinal numbers

ordinary differential equation

ordinate

origin

orthocenter

oscillating series

ounce (oz)

outcomes

outlier

outside

oval

overestimate

P

parabola

paraboloid

parallel lines

parallel planes

parallelepiped

parallelogram

parallelogram of vectors

parameter

parametric equation

parenthesis

partial derivative

partial differential

partial differential equation

partial product

Pascal´s triangle

pattern

penny

pentagon

percent

percentage

percentile

perfect number

perfect square

perimeter

period

periodic function

permutation

perpendicular lines

perpendicular planes

perspective

pi

pictogram

pictograph

pie chart

pint (pt)

place value

planar

plane

plane figure

plane geometry

plot

plus sign

point

point of contact

point of intersection

point of rotation

point symmetry

polar coordinates

polygon

polyhedron

polynomial

population

positive

positive correlation

positive direction

positive integer

positive number

positive slope

pound (lb)

power

power series

powers of ten

practical situation

precision

precision of measurement

predict

prediction

prime factor

prime factorization

prime number

principal

principal value

prism

probability

product

product formula

progression

proof

proper fraction

property of one for multiplication

property of zero

proportion

protractor

pyramid

Pythagorean theorem

Q

quadrant

quadratic equation

quadratic function

quadrilateral

quart (qt)

quarter

quarterly

quartic equation

quartile

quintic equation

quotient

R

radian

radical

radius (of a circle)

radius (of a sphere)

random event

random number

random sampling

random selection

range

range (in statistics)

range (of a function)

range of a relation

rate

ratio

rational number

rationalize

ray

real number

reciprocal

rectangle

rectangular axis

rectangular coordinate system

rectangular hyperbola

rectangular parallelepiped

rectangular prism

recurring decimal

reduce

reduction formulas

reflection (flip)

reflex angle

regrouping

regular polygon

regular polyhedron

relation

relative error

remainder

remainder theorem

repeating decimal

replacement set

representation

representative fraction (RF)

result

retail price

rhombus

right angle

right solid

right triangle

right triangle trigonometry

ring (in geometry)

rise

Roman numerals

root (of an equation)

root-mean-square (RMS)

rotation

rotation of axes

rotational symmetry

rounding

rounding numbers

row (in a matrix)

run

S

sale price

sales tax

sample

sample space

sampling

satisfy

scalar

scalar product

scalar quantity

scale

scale drawing

scale factor

scale model

scalene

scalene triangle

scatter diagram

scatter plot

scientific notation

sec

secant

secant (sec)

sech

second (angle unit)

second (time unit)

second quartile

section

sector

segment

segment (of a figure)

semi

semiannually

semicircle

semiregular polyhedron

sequence (progression)

series

set

shape

SI units

side

side-angle-side (SAS)

side-side-side (SSS)

sign

signed number

significant digits

similar polygons

similar triangles

similarity

simple harmonic motion (s.h.m.)

simple interest

simplest form

simplify

simultaneous equations

sin

sine (sin)

sine rule

singular matrix

sinh

sinusoid

sinusoidal

sketch

skew lines

skip count

slant height

slant height of a regular pyramid

slant height of a right cone

slide

slide rule

slope

small circle

solid angle

solid figure

solid geometry

solid of revolution

solution

solution of the system

solution of triangles

solve

speed

sphere

spherical polar coordinates

spherical sector

spherical segment

spherical triangle

spherical trigonometry

spheroid

spiral

spline

square (in algebra)

square (in geometry)

square matrix

square number

square pyramid

square root

square unit

squaring the circle

stacked bar graph

standard

standard deviation

standard form

standard units

stationary point

statistics

stem-and-leaf plot

steradian

straight angle

straight line

straightedge

strategy

subscript

subset

substitute

substitution method

subtract

subtraction

subtraction (of fractions)

subtraction sentence

subtrahend

successor

sum

sum to infinity

superscript

supplementary angles

supplementary units

surface area

surface of revolution

survey

symbol

symbolic language

symmetry

system of equations

T

table

Tabular

tabulate

tally marks

tally table

tan

tangent (tan)

tangent line (to a circle)

tangent line (to a curve)

tangram

tanh

temperature

tens

tenth

tera-

term

terminating decimal

ternary

tessellation

tetrahedron (triangular pyramid)

theorem

theoretical probability

third quartile

thousandth

three-dimensional

tolerance

ton (t)

ton (T, customary system)

tonne

topology

torus (anchor ring)

total derivative

total differential

trajectory

transcendental number

transformation (in algebra)

transformation (in general)

transformation (in geometry)

transformation (of coordinates)

transformational motion

translation (slide)

translation of axes

translational symmetry

transpose of a matrix

transversal

trapezoid

trapezoidal rule

tree diagram

trend

trial

trial and error

triangle

triangle inequality

triangle sum theorem

triangular matrix

triangular number

trigonometric functions

trigonometric ratios

trigonometry

trillion

trinomial

trirectangular

trisect

trivial solution

trochoid

truncated

truth table

truth value

turn symmetry

turning point

two-dimensional

U

unary operation

unbounded

underestimate

unicursal

union

unique solution

uniqueness

unit

unit fraction

unit matrix (identity matrix)

unit price

unit vector

universal set

unknown

unlike fractions

upper bound

upper extreme

V

valid

validate

value

vanishing point

variable

variance

variational calculus

vector

vector difference

vector multiplication

vector product (cross product)

vector sum

vectors, parallelogram of

Venn diagram

verify

vertex (in plane geometry)

vertex (in solid geometry)

vertical

vertical angles

vertical bar graph

vertical line test

vertically opposite angles

volume

vulgar fraction

W

wavelength

week

weight

whole numbers

wholesale price

width

withholding tax

written form

X

x-axis

x-coordinate

x-intercept

Y

y-axis

y-coordinate

y-intercept

yard (yd)

year

yield

yocto-

yotta-

Z

zepto-

zero

zero matrix (null matrix)

zero property of addition

zero property of multiplication

zetta-

zone