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vocabulary math word

terms to know for 7th grade math

numbers distance from zero on a number line absolute value
any angle whose measure is less than 90 degrees acute angle
triangle which all angles measure less than 90 degrees acute triangle
opposite of a number additive inverse
specific set of instructions for solving a problem algorith
when two parrallel lines are cut by a transversal, 2 angles above and below the parallel lines and on opposite sides of the transversal alternate exterior angles
when two parallel lines are cut by a transversal, two angles between the lines and on opposite sides of the transversal aleternate interior angles
to seperate things into parts analyze
two rays that meet at a common endpoint angle
to estimate a a value which is not exact but close enough to use approximate
squence of numbers where a number is added or subtracted each time arithmetic squence
sum or product of a set of numbers is the same, no matter how they are grouped associative property
1)the side or face a 3-D shape stands2)a quanity which is raised to an exponet base
box indicating the middle 50% of the ranked statistics and the max/min of data box and whisker plot
all points are equistant from a fixed point circle
display of data using a circle divided into slices circle graph
distance around a circle pie distance circumference
rule which states that you may add or multiply in any order commutative property
to give similarities and differences compare
two angles whose sum is 90 degrees complementry angles
number with two or more factors composite number
polygon that has an interior angle greater than 180 degrees concave polygon
solid consisting of circular base and one vertex cone
figures with the same size and shape congruent
to give differences contrast
a polygon that has no interior angle greater than 180 degrees convex polygon
two-dimensional figure consisting horizontal and vertical axes coordinate plane
ordered pair of numbers that describes a point on coordinate graph coordinates
any pair of angles of which is on the same side of one of two lines cut by a transversal on the same side of the transversal corresponding angles
1)solid with six square faces2)to raise a number to the thrid power cube
units of measurement used in the U.S. (inch, feet, pints, pounds, etc.) customary system
solid shape with circular bases cylinder
line segment connecting two non adjacent verticals in a polygon diagonal
line segment that passes through the center of a circle and divides it in half diameter
anwser to a subtraction problem difference
two quanities in which an increase in one causes an increase in the other directly proportional
length of shortest line segment between 2 points, lines, and planes distance
a(b+c)=ab+ac and vice versa distributive property
set of possible values for the variables domain
line segment where the faces of a polyhedron meet edge
mathmatical sentence that two expressions are equal equation
all sides are of equal length equilateral triangle
represent the same number equivalent forms
an approximation or rough calculation estimate
method of writing a number that highlights the value of each digit 867=800+60+7 exxpanded form
ratio of the number of times an outcome happened to the total number of trials in an experiment experimental probabilty
number written using bases and exponets (32=2 to the fifth power) exponential form
numeral that indicates how many times a number or expression is to be multiplied by itself exponents
combination of numbers, variables and operations expression
flat, polygonal regions of a polyhedron faces
number or expression that is multiplied by another to yield a product factor
n!: product of all the whole numbers from 1 to n [3! = (3)(2)(1)] factorial
1,1,2,3,5,8,13,21,34,55,etc. (add previous 2 numbers) fibonnacci
assigns exactly 1 out value to each input value function
if there are m ways for one event to occur and n ways for another event to occur, then there are mn ways for moth events to occur fudemental counting principle
to produce or create generate
squence where you multiply or divide to get the next term geometric sequence
flat, level figure moving left to right horizontal line
side in a right triangle, opposite the right angle(longest side) hypotenuse
in probability, one outcome of an event doesnt effect anothers outcome independent event
statement that one quantity is{or} another inequality
whole numbers and opposites integers
to explain the meaning of interpret
in a set of data, the difference between the first and third quartile interquartile range
set of elements that belong to each of two overlapping sets intersection
space of time between events or objects interval
two quantities for which an increase in one causes a decrease in the other inveresly proportional
operations that undo each other inverse operations
to study by close examination investagate
set of numbers that cannot be expressed as finite or repeating decimals irrational numbers
triangal with at least two equal sides of equal length isosceles triangle
to prove to be right justify
sides adjacent to the right angle of a right triangle legs of triangle
on a line, two endpoints and all points between them line segment
Created by: laurengillian