TERM
 MEANING

Absolute Value
 Distance
between a number and 0 on number line 
Abundant Number  A number smaller than the sum of its divisors 
Algebra  A branch of math
where letters represent numbers 
Algorithm  A step by step procedure to solve a problem 
Annulus  Region between 2 concentric circles 
Arithmetic 
A
branch of mathematics involving number calculations. It includes addition, subtraction, multiplication & division.

Attribute
 A
characteristic showing shape, size or color 
Axiom  Something accepted as true without any proof 
Bar Graph  Vertical or horizontal
bars that represent data 
Bar Notation  Method of recording recurring decimals 
Base  Bottom of a figure or object 
Binary System  Number system using
base number 2. Digits 0 & 1 are used to express each number. 
Bisect  Dividing into 2 equal parts 
Braces  { } symbols that
refer to sets 
Calculus
 A
branch of math dealing with integrals, derivatives & rates of change 
Cardinal Numbers  Number of elements in finite/infinite sets

Centroid

The point where the 3 medians of a triangle intersect 
Chord  An interior line joining 2 points on circle circumference

Circumference
 Distance
around a circle 
Coefficient
 A
number that multiplies a letter (variable) 
Collinear Points  3 or 4 points lying on the same straight line 
Composite Number  Number having factors
other than 1 and itself 
Congruent  Possessing same size and same shape 
Decagon  Polygon with 10 sides 
Decahedron  A three dimensional
shape having 10 plane faces 
Deficient Number  Any number larger than the sum of its divisors 
Denominator  Bottom number of
a fraction 
Discrete
Data  Data
with finite or limited value 
Divisor  The dividing number 
Element  An item or member in a set 
Ellipse  A stretched or flattened circle 
Equiangular  All angles are
equal 
Equilateral
Triangle 
A triangle having 3 equal sides and angles 
Even Number  Any number that can be divided by 2 like 4,
10, 16 
Exponent
 A
tiny number to upper right of base number denoting the times the base number should multiply by itself. 
Expression  Symbol referring
to a number or variable 
Extremum  It is extreme value of a function 
Factor  A number dividing into another number exactly 
Figure 
Two
dimensional shape 
Finite
 Which
can be counted to a limit 
Formula  An equation stating a rule 
Fortnight  14 days or 2 weeks 
Fraction  A section of a number 
Frequency  Occurring repeatedly

Function
 The
relationship between 2 variables 
Gallon  Equals 3.78 litters 
Geometry  A study of angles, curves and lines in 2 & 3 dimensions 
Googol  1 followed by 100
zeros or 10 raised to 100^{th} power 
Googolplex  Largest number with a name. Its value is 10 raised to googol power 
Greatest Common Factor
(GCF) 
Greatest number that divides two or more other numbers exactly. GCF for 12, 18 & 24 is 6.

Gross Mass
 Includes
product & container 
Gross Profit  All the money that was received 
HalfLife  Amount of time taken for a substance to diminish
by half. Half life of isotope carbon14 is 5730 years. 
Hectare  10, 000 square metres 
Hectometre  100 metres 
Heptagon  Polygon with 7 sides 
Hexagon  Polygon with 6
sides 
Hypotenuse
 Longest
side of a right angled triangle 
Icosahedron  Polyhedron with 20 faces 
Improper Fraction  A fraction where the numerator is equal or greater
than its denominator like 6/4 
Index  Exponent 
Infinite  Unlimited number or number without an end 
Integers  All negative & positive whole numbers and
zero too 
Isometric
 Containing
equal measurements 
Isosceles
Triangle 
Triangle with 2 equal sides and angles 
Jointly Proportional  1 variable directly proportional to other variables
one at a time 
Jump
Strategy 
To make a calculation, a jump is made along an empty number line by 10s and 1s 
Kilogram  Equals 1000 grams

Kilometre
 Equals
1000 metres 
Least
Common Denominator 
Smallest whole number used as denominator for two or more fractions 
Lemma  A stepping stone
for proof of a theorem 
Linear  Referring to a straight line 
Locus  A set of points forming a geometric figure 
Logarithm  It is a power to which a base should be raised
to achieve a desired number 
Mathematics (Math/Maths)  Study of various calculations, numbers, quantities, shapes and space using symbols,
equations and formulae. 
Matrix  A rectangular array of numbers written in parenthesis/brackets 
Mean  Average 
Median 
The
middle number in a series of numbers 
Minor Arc  The smaller curve of a circle when it is divided into 2 curves 
Mixed Number 
A
whole number with a fraction like 7 1/2 
Mode  Numbers occurring most frequently in a list 
Monomial  A single term in algebraic expression

Natural Numbers
 Regular
numbers that are counted 
Negative Integer  A number less than zero but not a decimal or fraction 
Nonagon  Polygon with 9
sides 
Number
Sentence 
Math sentence using only symbols and numbers 
Numeral  Symbol referring to a number 
Numerator  Any number above
fraction line 
Obtuse
Angle 
Angle between 90 degrees and 180 degrees 
Obtuse Triangle  A triangle with one obtuse angle at least 
Octagon 
Polygon
with 8 sides 
Odd
Number 
Any number that can’t be divided by 2 like 9, 15 
Opposite Numbers  Two same numerals that have opposite signs like
+57 and 57 
Ordinal
 Number
referring to order like first, second, third 
Outcome  In probability, it refers to one of the possible results 
Palindrome Number  Any number that
shows same value forwards & backwards like 666, 77477 
Parabola  U shaped curve where any point on it is equally distant from a fixed point and
a fixed straight line 
Pentagon
 Polygon
with 5 sides 
Perfect
Number 
A number which is equal to sum of its dividing numbers 
Pi  Ratio of circumference to diameter of a circle 
Polygon 
A
plane figure with 3 or more sides 
Polyhedron  A 3D object with polygons as its faces 
Prime Number  Any number that is divided evenly
by 1 and itself like 11, 19 
Proper Fraction  A fraction where the numerator is lesser than its denominator like 6/8

Proportion
 Equality
of 2 ratios 
Quadrangle
 Polygon
with 4 angles 
Quadrilateral
 Polygon
with 4 sides 
Quadrillion
 1
000 000 000 000 000 (10 raised to 15^{th} power) 
Quantitative Data  Information that can be counted or measured

Quotient
 The
result of a division problem 
Radius  Distance from circumference to center of a circle 
Ratio  Relation or comparison between 2 quantities

Ray
 A
straight line having starting point but no end point 
Reciprocals  Two numbers whose product is one 
Reflex Angle  An angle that measures between 180
degrees and 360 degrees 
Rhombus  Parallelogram having all sides and opposite angles equal 
Right angle  Angle measuring
90 degrees 
Scalene
 A
triangle with 3 sides unequal 
Set  Group of items that are called elements 
Sin  Ratio of length of opposite side to hypotenuse length of
a right angled triangle 
Skew Lines  Those lines not lying in the same plane in space 
Solid  3D shape with length,
width & height 
Speed
 The
movement of something over a distance in a given time 
Square root  A number that multiplies by itself produces original number 
Straight Angle  An angle which
measures 180 degrees 
Tangent line  A line touching a curve at a point without crossing over 
Tangram  A square that is
cut into 7 pieces 
Term
 A
number in sequence, or a series, or part of algebraic equation 
Tessellation  Different shapes fitting together without any
gap 
Triangle
 Polygon
with 3 sides 
Trigonometry
(Trig) 
A study of triangles 
Trinomial  Algebraic expression with 3 terms 
Unit  A standard quantity like a pound is a unit of
weight 
Unit
Rate  In
2 measurements comparison one of the terms has value of 1 
Unlikely  A probability outcome between 0 and 0.5 
Value  Numerical amount 
Variable  A letter used to
represent a number or numbers in equations and expressions 
Vector  A quantity which has direction and magnitude (amount). Velocity & force
are examples of vector. 
Vertex  Corner 
Vinculum  Horizontal line over a symbol or symbols 
Volume  Amount of space 
Whole  Amount in total;
all 
Whole
Number 
A number from 0 to infinity 
Width  Breadth 
x  A symbol referring to unknown quantity in equations 
X 
Roman
numeral for 10 
Xaxis
 Horizontal
axis of a graph 
Yaxis
 Vertical
axis of a graph 
Yintercept
 A
point where a graph intersects the yaxis 
Yard  Equal to 36 inches or 3 feet 
Zintercept  A point where a graph intersects the zaxis

Zero
 The
number that has no quantity. It is used as place holder. The 0 symbol was invented around 500 AD by Hindu mathematicians
and not by Arabs. 
Zero
Matrix 
Where all elements are equal to zero 
Zero Vector  A vector with zero magnitude (amount) 