Math Concepts Flashcards
all the angles in a triangle add up to
180 degrees
all angles of a quadrilateral add up to
360 degrees
the formula for perimeter is
length + length + width + width
the formula for area is
length times width
the formula for volume is
Length times width times height
on a place value chart the values increase by a factor of
by tens
what is a multiple
it is a answer to a multiplication question
Acute angle
a positive angle measuring more than 0 degrees but less that 90 degrees
acute triangle
a triangle in which all three angles measure less that 90 degrees
angle
the point of intersection of two rays or line segments
area
the space within a region measure in square units
bar graph
a graph that displays data using bats of equal width on a grid
commutative property of addition
the order in which numbers are added does not change the sum of the numbers
commutative property of multiplication
the order in which numbers are multiplied does not change the product of the numbers
compatible numbers
numbers that are close to the actual numbers but are easier to mentally add, subtract, multiply or divide
composite number
a number with a minimum of three factors including 1 and itself
congruent
having the same shape and size
constant
a term that does not change
continuous data
data that can take on any value within a range
discrete data
data with a limited number of possible values.
what is an example of discrete data
months of the year or days of the week
double bar graph
a graph used to make comparisons between two sets of data
equilateral triangle
a triangle with three sides of equal length and three angles of equal measure
experimental probability
the probability of any event determined by the results of an experiment
expression
a mathematical statement that may use numbers, variables, or both numbers and variables.
What does an expression not contain?
an equal sign
factor
a number that divides evenly into another number
factor tree
a method used to diagram the process of prime factorization
greatest common factor
the factor with the greatest value common to two or more numbers
improper fraction
a fraction whose numerator is greater than the denominator
integer
all positive whole numbers, the additive inverses of the whole numbers and zero
interior angle
an angle found inside a shape
inverse operation
an operation that has the opposite effect of the operation in an equation. Addition and subtraction are the inverse operations of each other. Multiplication and division are the inverse operations of each other
isosceles triangle
a triangle that has two sides that are equal and two angles that are equal
line graph
a graph where data points are connected with line segments to show change over time
lowest common multiple
the multiple with the least value that two numbers
mixed number
a number made up of a whole number and a proper fraction
multiple
the product of any given whole number
obtuse angle
an angle measuring more than 90 degrees but less than 180
obtuse triangle
a triangle in which one of the angles measures more than 90 degrees but less than 180 degrees
pattern
a list of numbers that follow a certain sequence
percentage
a fraction or ratio with a denominator of 100
perimeter
the measure of the distance around a closed two dimensional figure
polygon
a closed two dimensional shape with three or more straight line segments
prime number
a whole number with only 2 factors: itself and 1
ratio
a comparison of two or more quantities having similar units
reflection
a reflection is a transformation in which a figure is flipped along a line of symmetry to create a congruent image
reflecting angle
an angle whose measure is between 180 and 360
right angle
an angle measuring 90 degrees
right triangle
a triangle that has on right angle of 90 degrees
rotation
a transformation in which an image is turned around a fixed point
rounding
a process of replacing a number by an approximate value of that number
scalene triangle
a triangle with three sides of different lengths and three angles of different measures
straight angle
an angle measuring 180 degrees
table of values
a chart showing the relationship between x and y values
term
the value of a number in a given pattern
term number
the position of a term within a given pattern
theoretical probability
the change of an outcome happening under ideal circumstances
translation
a transformation that moves a point or image from one position to another along a vertical, horizontal or diagonal line
variable
a symbol that stands for an unknown number in an equation
volume
the amount of space taken up by a three dimensional shape, usually expressed in cubic units
