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132 Cards in this Set

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  • Back
acute angle
an angle whose measure is greater than 0 degrees and less than 90 degrees
acute triangle
a triangle with three acute sides
algebraic expression
an expression that contains a variable
m + 2
angle
two rays with a common endpoint called a vertex
area
the number of square units needed to cover a region
average (mean)
the sum of the addends divided by the number of addends
axis
either the horizontal line (called x) or the vertical line (called y) that form the base lines of the graph.
bar graph
a graph that uses horizontal or vertical bars to represent data
base (exponential notation)
it is a number that is used as a repeated factor
base (geometry)
a face on which a figure rests
circle
a closed plane figure with all the points of a circle the same distance from a point called the center
circle graph (pie graph)
a graph that uses a circle divided into parts to represent the parts of a set of data while the circle represents the whole set of data
circumference
the length of (or distance around) a circle - the perimeter of a circle
common denominator
a number that is a multiple of each deonominator in a given set of fractions
common factor
a number that is a factor of two or more given numbers
compatible numbers
numbers that are easy to compute
composite numbers
a whole number greater than one that has more than two factors
ex. 4, 6, 8, 9, 10
cone
a space figure with one circular base and one vertex
congruent
two figures that are identical - the same size and same shape
coordinate
a number used to locate a point on a number line or coordinate grid
coordinate grid
a device for locating points in a plane by means of ordered number pairs or coordinates.
cube
a space figure with six congruent square faces
cylinder
a space figure with two parallel circular bases
decimal
a number with one or more digits to the right of a decimal point, with those digits representing parts of a whole
denominator
the number of equal parts into which the whole is divided
diameter
the diameter of a circle is any line segment passing through the center of the circle whose endpoints are on the circle
difference
the answer for subtraction
digit
any of the symbols used to write numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9
dividend
in division, the total before sharing
divisible
a number is divisible by another number if the remainder is 0 after dividing
divisor
if a number n is divisible by a number x, then x is a divisor of n
double bar graph
a graph that uses pairs of bars to compare information
edge
a segment that is the intersection of two faces of a space figure
elapsed time
an amount of time that has passed
equilateral
a polygon with all sides the same length
equalateral triangle
a triangle that has three sides of the same length
equivalent fractions
fractions that have different numerators and denominators, but name the same number
estimate
an approximate rather than an exact answer
expanded form
a number written as the sum of the values of its digits -
500 + 50 + 5 is the expanded form of 555
exponent
it indicates how many times the number 2 is used as a factor
exponential notation
a shorthand way of representing repeated multiplication of the same factor.
face
a flat surface of a space figure
factor
any numbers that are multiplied together to give a product
factor tree
a diagram used to show the prime factors of a number
formula
a rule for finding the value of something
fraction
a number that names part of a whole
ex. 1/2, 2/3
frequency table
a table used to record and summarize the number of times something occurs
greatest common factor(GCF)
the greatest common number that is a factor of each of two or more numbers
hexagon
a polygon with 6 sides
improper fractions
a fraction in which the numerator is greater than or equal to the denominator
intersecting lines
lines that have exactly one point in common
interval
the distance between points on the scale of a graph
inverse operations
two operations that have the opposite effect - addition and subtraction and multiplication and division are inverse operations
isosceles triangle
a triangle with two congruent sides
landmarks
a measure of data - emphasized in this program include median, mode, maximum, and range
least common denominator
the least common multiple of the denominators of two or more fractions
least common multiple
the least number, other than zero, that is a multiple of each of two or more numbers
line graph
a graph used to show changes over a period of time
line of symmetry
a line that divides a figure, when folded along the lines into two congruent parts
line segment
a part of a line having two endpoints
lowest terms
a fraction is in lowest terms if the greatest common factor of the numerator and the denominator is 1
maximum
the largest amount; the greatest number in a set of data
median
the middle value in a set of data when the data are listed in order from smallest to largest
minimum
the smallest amount; the least number in a set of data
mixed numbers
a number that has a whole number part and a fraction part
mode
the value or category that occurs most often in a set of data
multiple
the product of a whole number and any other whole number
negative number
they are numbers to the left of the zero
number line
a line that shows numbers in order
number sentence
an equation written in standard form
ex. 3X4 = 12
numerator
the number above the fraction bar in a fraction
obtuse angle
an angle that is larger than 90 degrees but less than 180 degrees
obtuse triangle
a triangle with one obtuse angle
octagon
a polygon with 8 sides
opposite of a number
on a number line, a number and its opposite are the same distance from zero
ex. +3 is opposit of -3
ordered number pair
two numbers in a specific order - used to locate a point on a coordinate grid
parallel
always the same distance apart, no matter how far extended; never meeting
parallelogram
a quadrilateral that has two pairs of parallel sides and equal opposite sides
partial products
when multiplying two 2-digit numbers, the product after multiplying by ones or the product after multiplying by tens
pentagon
a polygon with 5 sides
percent
a ratio whose second term is 100 - percent means parts per hundred
perimeter
the distance around a polygon or figure
perpendicular
two rays, lines, or line segments that form right angles are said to be perpendicular to each other
pictograph
a graph that represents numerical data using pictures
place value
the value determined by the position of a digit in a number
point
an exact location in space
polygon
a closed figure with line segments as sides
powers of 10
a whole number that can be written using only 10's as factors
prime factorization
writing a number as the product of prime factors
prime numbers
a whole number greater than 1 with only two factors - itself and 1
prism
a space figure with two parallel and congruent bases that are polygons
probability
the ratio of the number of favorable outcomes to all outcomes of an experiment
product
an answer in multiplication
proper fraction
a fraction in which the numerator is less than the denominator
pyramid
a space figure whose base is a polygon and whose faces are triangles with a common vertex
quadrilateral
a polygon with four sides
quotient
the answer in division
ratio
a comparision by division of two counts or measures with the same unit
radius
a line segement from the center of a circle to any point on the circle
range
the difference between the greatest (maximum) and the least (minimum) numbers in a set of data
ratio
a comparasion of qualities
ray
a part of a line that has one endpoint and goes on and on in one direction
rectangle
a parallelogram with four right angles
rectangular prism
a space figure whose faces are all rectangles
reflection
a change in position that produces a mirror image of a figure
remainder
the number left over when a set of objects is sepearated into equal groups or shared equally
rhombus
a parallelogram with all sides congruent
right angles
any 90 degree angle
right triangle
a triangle with one right angle
rotation (turn)
a change of position that rotates a figure around a point
scalene triangle
a triangle that has no sides of the same length
similar figures
figures that have the same shape but not necessarily the same size
simplest form
a fraction in which the numerator and denominator have no common factor except 1
sphere
a space figure with all points an equal distance from the center
square
a rectangle with all sides congruent
square unit
a unit used to measure area
standard form
a number written with commas separating groups of three digits
straight angle
an angle what measures 180 degrees
sum
the answer in addition
symmetry
a figure is symmetric if it can be folded along a line so that the two resulting parts match exactly
transformation
the turning, sliding, or flipping of a plane figure
translation
a change in position that moves a figure up, down, or over
trapezoid
a quadrilateral with only one pair of opposite sides parallel
tree diagram
a diagram used to organize outcomes of an experiment
triangle
a polygon with three sides
triangular prism
a prism whose bases are triangles
unit price
the rate; price per unit of measure
unlike denominator
denominators that are different, as in 1/2 and 2/3
variable
a symbol (usually a letter) that can have a range of numerical values in a given problem or discussion
vertex
the point of intersection of two sides of a polygon - the point of intersection of three edges of a space figure
volume
the number of cubic units that fit inside a space figure
whole numbers
the numbers in a set (0,1,2,3...)