Definitions Flashcards
absolute value
The distance a number is from zero on a number line
mode
the most frequent value of a random variable
acute angle
an angle less than 90 degrees but more than 0 degrees
obtuse angle
An angle that measures more than 90 degrees but less than 180 degrees
algebraic
a group of numbers, symbols, and variables that express a single or series of mathematical operations (e.g., 2x+4+6y )
parallel
lying in the same direction and always the same distance apart
angle pairs
Corresponding angles: Alternate interior angles, Alternate exterior angles, Same side interior angles, Same side exterior angles
perimeter
a line enclosing a plane area, the distance around a figure
area
the number of square units needed to cover a flat surface
perpendicular
at right angles to the plane of a base line
associative property
Changing the grouping of numbers will NOT change the value. For example: (7 + 4) + 8 = 7 + (4 + 8).Works with multiplication and addition.
polygons
a closed plane figure made up of line segments
circumference
the distance around a circle
probability
a measure of how likely it is that some event will occur
commutative property
In mult or add, the order of two numbers may be switched around and the answer is the same. Ex: a+b = b+a.
proportion
an equation that states that two ratios are equal
congruence
Figures or shapes that have the same size, shape and measure
quadrilateral
a four-sided polygon
coordinate graph
a grid of vertical and horizontal lines that show the relationship between two variables
range
the difference between the largest number and the smallest number in a given set
distributive property
a(b+c)=ab+ac
ratio
a comparison of two quantities by division
equation
a mathematical sentence that shows that two expressions are equivalent
reciprocals
two numbers whose product is one
expression
a group of symbols that make a mathematical statement (with no equal sign)
integers
Positive and Negative Whole Numbers and 0. Examples: …. -3, -2, -1, 0, 1, 2, 3…..(Does not include fractions or decimals)
inverse operations
operations that undo each other
like terms
terms that contain the same variables, with corresponding variables having the same exponent
square root
a number that when multiplied by itself equals a given number
variable
a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity
volume
the amount of 3-dimensional space occupied by an object
mean
an average of n numbers computed by adding some function of the numbers and dividing by some function of n
median
the middle number in a set of numbers that are listed in order
order of operations
the order in which operations in an expression to be evaluated are carried out. 1. parentheses 2. exponets 3. multiplication and divison 4. addition and subtraction
x, y table
represents pairs of values of two related quantities.
