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# vocabulary math word

### terms to know for 7th grade math

Question | Answer |
---|---|

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