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Math Vocabulary
Basic Math Vocabulary
52
Mathematics
9th Grade
10/18/2022

Additional Mathematics Flashcards

 


 

Cards

Term

absolute value

Definition

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

Term

acute angle

Definition

A positive angle measuring less than 90 degrees.

Term

acute triangle

Definition

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

Term

additive identity

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

additive inverse

Definition
The additive inverse of any number x is the number that gives zero when added to x. The additive inverse of 5 is -5.
Term

adjacent angles 

Definition

 
Two angles that share both a side and a vertex.

 



Term

angle 

Definition

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

Term

arc
 

Definition

 
A portion of the circumference of a circle.

Term

area
 

Definition

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

Term

associative property of addition
 

Definition

 
(a + b) + c = a + (b + c)

Term

associative property of multiplication
 

Definition

 
(a x b) x c = a x (b x c)

Term

average
 

Definition

 
A number that represents the characteristics of a data set.

Term

axis of symmetry 

Definition

 
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.

Term

base
 

Definition

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

Term

Bisect
 

Definition

 
To divide into two congruent parts.

Term

Box and whisker plot 

 

Definition

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

 



Term

Cartesian coordinates
 

Definition

 
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.

Term

central angle
 

Definition

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

Term

chord
 

Definition

 
A line segment that connects two points on a curve.

Term

circle
 

Definition

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

Term

circumference
 

Definition

 
The distance around a circle.

Term

coefficient
 

Definition

 
A constant that multiplies a variable.

Term

collinear
 

Definition

 
Points are collinear if they lie on the same line.

Term

combination
 

Definition

 
A selection in which order is not important.

Term

common factor
 

Definition

 
A factor of two or more numbers.

Term

common multiple
 

Definition

 
A multiple of two or more numbers.

Term

commutative property of addition
 

Definition

 
a + b = b + a.

Term

commutative property of multiplication 

Definition

 
a*b = b*a.

Term

complementary angles
 

Definition


Two angles whose sum is 90 degrees.

Term

composite number
 

Definition

 
A natural number that is not prime.

Term

cone
 

Definition

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

Term

congruent 

Definition

 
Figures or angles that have the same size and shape.

Term

constant
 

Definition

 
A value that does not change.

Term

coordinate plane
 

Definition

 
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.

Term

coplanar
 

Definition

 
Points that lie within the same plane.

Term

counting numbers
 

Definition

 
The natural numbers, or the numbers used to count.

Term

counting principle
 

Definition

 
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.

Term

cross product
 

Definition

 
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.

Term

cube
 

Definition

 
A solid figure with six square faces.

Term

cylinder
 

Definition

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

Term
data
Definition

Information that is gathered

 

Term

decimal number

 

Definition
The numbers in the base 10 number systems, having one or more places to the right of a decimal.
Term

degree

 

Definition

A unit of measure of an angle

 

 

Term

denominator

 

Definition

The bottom part of a fraction.

Term

dependent events

 

 

Definition

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

Term

diagonal

 

 

Definition

The line segment connecting two nonadjacent vertices in a polygon. 

Term

diameter

 

 

Definition

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

Term

difference

Definition

The result of subtracting two numbers. 

Term

digit

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

distributive property

 

 

Definition

a(b + c) = ab + ac

Term

dividend

Definition

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

Term

divisor

 

Definition

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

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