The distance of a number from zero; the positive value of a number.

ex: [image]

A positive angle measuring less than 90 degrees

ex:

 [image]

A triangle each of whose angles measures less than 90 degrees.

ex:

 [image]

The number zero is called the additive identity because the sum of zero and any number is that

number. 

ex:

 [image]

The additive inverse of any number x is the number that gives zero when added to x. The additive

inverse of 5 is -5.

ex:

 [image]

Two angles that share both a side and a vertex.

ex: 

[image]

The union of two rays with a common endpoint, called the vertex.

ex: 

[image]

A portion of the circumference of a circle.

ex: 

[image]

The number of square units that covers a shape or figure.

ex: 

[image]

(a + b) + c = a + (b + c)

ex: 

[image]

(a x b) x c = a x (b x c)

ex: 

[image]

A number that represents the characteristics of a data set.

ex:

[image]

A line that passes through a figure in such a way that the part of the figure on one side of the line

is a mirror reflection of the part on the other side of the line.

ex: 

[image]

The bottom of a plane figure or three-dimensional figure.

ex: 

[image]

To divide into two congruent parts.

ex: 

[image]

A type of data plot that displays the quartiles and range of a data set.

ex: 

[image]

A system in which points on a plane are identified by an ordered pair of numbers, representing the distances to two or three perpendicular axes. 

ex: 

[image]

An angle that has its vertex at the center of a circle.

ex: 

[image]

A line segment that connects two points on a curve.

ex:

[image]

The set of points in a plane that are a fixed distance from a given point, called the center.

ex: 

         [image]                kl

The distance around a circle.  

ex: 

[image]

A constant that multiplies a variable.  

EX: 

[image]

Points are collinear if they lie on the same line. 

Ex: 

[image]

A selection in which order is not important.

Ex: 

[image]

A factor of two or more numbers. 

Ex:

[image]

A multiple of two or more numbers.

Ex: 

[image]

a + b = b + a.

Ex: 

[image]

a*b = b*a.

Ex: 

[image]

Two angles whose sum is 90 degrees.

Ex: 

[image]

A natural number that is not prime.

Ex: 

[image]

A three-dimensional figure with one vertex and a circular base.

Ex: 

[image]

Figures or angles that have the same size and shape.

Ex: 

[image]

A value that does not change.

Ex: 

[image]

The plane determined by a horizontal number line, called the x-axis, and a vertical number line,

called the y-axis, intersecting at a point called the origin. Each point in the coordinate plane can

be specified by an ordered pair of numbers.

Ex: 

[image]

Points that lie within the same plane.

Ex: 

[image]

The natural numbers, or the numbers used to count.

Ex: 

[image]

If a first event has n outcomes and a second event has m outcomes, then the first event followed

by the second event has n times m outcomes. 

Ex: 

[image]

A product found by multiplying the numerator of one fraction by the denominator of another

fraction and the denominator of the first fraction by the numerator of the second.

Ex: 

[image]

A solid figure with six square faces.

Ex: 

[image]

A three-dimensional figure having two parallel bases that are congruent circles

Ex: 

[image]

Information that is gathered.

Ex: 

[image]

The numbers in the base 10 number system, having one or more places to the right of a decimal

point. 

Ex: 

[image]

A unit of measure of an angle.

Ex: 

[image]

The bottom part of a fraction.

Ex:

[image]

Two events in which the outcome of the second is influenced by the outcome of the first. 

Ex: 

[image]

The line segment connecting two nonadjacent vertices in a polygon. 

Ex: 

[image]

The line segment joining two points on a circle and passing through the center of the circle. 

Ex: 

[image]

The result of subtracting two numbers.

Ex: 

[image]

The ten symbols, 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. The number 215 has three digits: 2, 1, and 5.

Ex: 

[image]

a(b + c) = ab + ac

Ex: 

[image]

In a / b = c, a is the dividend.

Ex: 

[image]

In a / b = c, b is the divisor.

Ex: 

[image]

The set of all points in a plane such that the sum of the distances to two fixed points is a constant. 

Ex: 

[image]

A mathematical statement that says that two expressions have the same value; any number

sentence with an =. 

Ex: 

[image]

A triangle that has three equal sides.

Ex: 

[image]

Two equations whose solutions are the same.

Ex: 

[image]

Fractions that reduce to the same number.

Ex: 

[image]

The difference between an approximate measurement and the actual measure taken. 

EX: 

[image]

To substitute number values into an expression.

Ex: 

[image]

A natural number that is divisible by 2.

Ex: 

[image]

A number that indicates the operation of repeated multiplication.

EX: 

[image]

Fractions that reduce to the same number.

Ex: 

[image]

One of two or more expressions that are multiplied together to get a product. 

EX: 

[image]

To break a number into its factors. 

EX: 

[image]

A flat surface of a three-dimensional figure.

EX: 

[image]

A equation that states a rule or a fact.

EX: 

[image]

A number used to name a part of a group or a whole. The number below the bar is the

denominator, and the number above the bar is the numerator. 

EX: 

[image]

The number of times a particular item appears in a data set.

EX: 

[image]

A data listing which also lists the frequencies of the data. 

EX: 

[image]

A type of drawing used to represent data.

EX: 

[image]

The largest number that divides two or more numbers evenly. 

EX: 

[image]

A line with zero slope.

EX: 

[image]

The side opposite the right angle in a right triangle. 

EX: 

[image]

The sum of any number and 0 is that number. 

EX: 

[image]

The product of 1 and any number is that number. 

EX: 

[image]

A fraction with a numerator that is greater than the denominator. 

EX: 

[image]

Two events in which the outcome of the second is not affected by the outcome of the first. 

EX: 

[image]

A mathematical expression which shows that two quantities are not equal. 

EX: 

[image]

A limitless quantity.

EX: 

[image]

An angle placed inside a circle with its vertex on the circle and whose sides contain chords of the

circle. 

EX: 

[image]

A polygon placed inside a circle so that each vertex of the polygon touches the circle. 

EX: 

[image]

The set of numbers containing zero, the natural numbers, and all the negatives of the natural

numbers.

EX: 

[image]

The x-intercept of a line or curve is the point where it crosses the x-axis, and the y- intercept of a

line or curve is the point where it crosses the y-axi. 

EX: 
[image]

The arc of a circle within an inscribed angle.

EX: 
[image]

A method for estimating values that lie between two known values. 

EX: 

[image]

Lines that have one and only one point in common. 

EX: 

[image]

Opposite. -5 is the additive inverse of 5, because their sum is zero. 1/3 is the multiplicative

inverse of 3, because their product is 1. 

EX: 

[image]

Two operations that have the opposite effect, such as addition and subtraction. 

EX: 
[image]

A number that cannot be expressed as the ratio of two integers. 

EX: 

[image]

A triangle with at least two equal sides.

EX: 

[image]

The smallest multiple of the denominators of two or more fractions. 

EX: 

[image]

The smallest nonzero number that is a multiple of two or more numbers. 

EX: 

[image]

Fractions that have the same denominator.

EX: 
[image]

A straight set of points that extends into infinity in both directions. 

EX: 

[image]

Line that divides a geometric figure into two congruent portions.  

EX: 

[image]

Two points on a line, and all the points between those two points. 

EX: 

[image]

A path of points.

EX: 

[image]

The study of sound reasoning.

EX: 

[image]

Simplest form; when the GCF of the numerator and the denominator of a fraction is 1. 

EX: 

[image]