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# Final List

TermDefinition
acute triangle a triangle in which each of the three angles is acute (less than 90 degrees)
additive pattern a pattern that occurs when the same value is added to each input to determine the output or y = x + a
area the number of square units inside a closed 2D space
congruent of equal measure; having the same size and same shape
decagon polygon with 10 sides and 10 angles
denominator the part of a fraction below the bar that tells how many equal parts there are
difference the part remaining in subtraction
equilateral triangle a special isosceles triangle with three equal sides and 3 acute 60 degree angles
heptagon polygon with 7 sides and 7 angles
hexagon polygon with 6 sides and 6 angles
inverse operations opposite operations, or ones that undo each other such as addition and subtraction or multiplication and division
isosceles triangle a triangle with at least two congruent sides with all acute, one obtuse, or one right angle
multiplicative pattern a pattern that occurs when the same value is multiplied by an input to determine the output or y = ax
nonagon polygon with 9 sides and 9 angles
numerator the part of a fraction above the bar that tells the number of fractional pieces being used
obtuse triangle a triangle that has one obtuse angle (greater than 90 degrees) and two acute angles
octagon polygon with 8 sides and 8 angles
ordered pairs a pair of numbers used to locate a point on a coordinate plane (x, y)
parallel lines lines in the same plane that do not cross each other; they stay the same distance apart
parallelogram a quadrilateral where opposite sides are parallel and congruent
perimeter a linear measurement around the outer edge of a figure
pentagon polygon with 5 sides and 5 angles
perpendicular lines lines that intersect at right angles to each other to form square corners
polygon a closed plane figure formed by three or more line segments (no curves)
product the total when two or more factors are multiplied
quadrilateral polygon with 4 sides and 4 angles
rectangle a quadrilateral that is a parallelogram and has four right angles
regular polygon polygon with all sides and all angles congruent
rhombus a quadrilateral that is a parallelogram and has four congruent sides
right triangle a triangle with one right angle (exactly 90 degrees) and two acute angles
scalene triangle a triangle with no congruent sides with all acute, one obtuse, or one right angle
square a quadrilateral that is a parallelogram and has four right angles (rectangle) and four congruent sides (rhombus)
trapezoid a quadrilateral that only has one pair of parallel sides
triangle polygon with 3 sides and 3 angles
x - coordinate the first number in an ordered pair; it tells how far left or right to move from (0,0)
y - coordinate the second number in an ordered pair; it tells how far up or down to move from (0,0)
base the surface a solid object stands on
base area designated as a capital B in formulas and refers to the area of one of the bases in a solid
composite number a whole number with more than 2 factors
cube 3D figure that is a special rectangular prism with 6 square faces
dimension measure of length in one direction
divisible when a number can be divided by another with a whole number quotient and no remainder
factor a number multiplied by another number to find a product
rectangular prism 3D figure that has 6 rectangular faces, 12 edges, and 8 vertices
prime number a whole number greater than 1 with exactly two factors
quotient the size of each group or the number of groups when the dividend is divided by the divisor
volume the measure of the space occupied by matter; l x w x h = rectangular prism
whole numbers the set of counting numbers and zero (0, 1, 2, 3....)
numerical expression a mathematical phrases that uses only numbers and operation signs
equation a mathematical sentence that shows two things are equal
order of operations the rules that say which calculation comes first when simplifying and expression (PEMDAS)
associative property different combinations do not affect sums 1 + (2 + 3) = (1 + 2) + 3, or products 2 x (3 x 4) = (2 x 3) x 4; it does not apply to subtraction or division
axes the horizontal, (x), and vertical, (y), lines that act as reference points when plotting points on a coordinate grid
coordinate grid a two-dimensional plane on which to plot points, lines, and curves
commutative property order does not affect sums 2 + 3 = 3 + 2, or products 4 x 5 = 5 x 4; it does not apply to subtraction or division
distributive property in multiplication a factor can be broken into pieces; 4 x 56 = 4 x 50 + 4 x 6
expanded form the representation of a number as a sum of place values like 57 = 50 + 7
expanded notation the representation of a number as a product of the digit and its place value like 57= 5 x 10 + 7 x 1
hundredths second decimal place to the right
origin the starting point where the axes of a coordinate plane intersect; (0, 0)
tenths first decimal place to the right
thousandths third decimal place to the right
x-axis the horizontal (left to right) line on a coordinate plane that runs through zero
y-axis the vertical (up and down) line on a coordinate plane that runs through zero
improper fraction a fraction where the numerator is larger than the denominator
LCD the least common multiple of the denominators of two or more fractions
mixed number a whole number and a fraction together
simplest form a fraction where the numerator and the denominator do not have any common factors except 1
unit fraction a fraction whose numerator is 1
gross income income before any taxes or deductions are taken out of it
income tax money paid to the government based on a person's income
net income income that remains after taxes and deductions are taken out of the gross income
payroll tax the amount of money an employer withholds from its employees' pay for federal and state taxes, health insurance, retirement, etc.
property tax a portion of the value of items that is paid to a city or state government (usually on cars, houses, boats, or land)
sales tax the amount of money collected by a store (retailer) in addition to goods or services (it is based on a percent of how much is spent)
Created by: Wylie 5th

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