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# math vocab words

### math vocabulary

TermDefinition
proportion an equation that two ratios or rates are equivalent
origin the point of intersection of the x-axis and y-axis in a coordinate system
algebra a mathematical language that uses symbols,usually letters,along with numbers
area the number of square units needed to cover the enclosed surface
equation a mathematical sentence that contains an equal sign
mean the sum of the numbers in a set of data divided by the number of pieces of data
radius the distance from the center of the circle to any point of the circle
yard a customary unit of length equal to 3 feet, or 36 inches
parenthesis the rules that tell which operation to perform first when more than one operation is used in PEMDAS
diameter the distance across a circle through the center
rhombus a parallelogram with all sides congruent
quadrant one of the four regions in a coordinate plane separated by an x-axis and y-axis
mode the number or item that appear most often in a data set
perimeter the distance around any closed geometric fiqure
exponent in a power, the number of times the base is used as a factor
variable a symbol, usually a letter, used to represent a number
percent a ratio that compares a number to 100
circumference the distance around a circle
foot a customary unit of length equal to 12 inches
median the middle number in a set of data when the data are arranged in numerical order, if even the middle numbers added together then divided by 2
equivalent having the same value, for instance, fractions that have the same number 1/2=2/4
mixed fraction the sum of a whole number and a fraction 1 1/2 2 1/2
reciprocals any two numbers that have a product of one
chord a segment with endpoints that are on a circle
abtuse angle an angle that measures greater than 90 degrees, but less than 180 degrees
ratio a comparison of two quantities by division, for instance 3:4=3/4
decimal numbers that have digits in the tenths, hundredths, thousands place and beyond
outlier a value that is much higher or much lower than the other values in a set of data
improper fraction a fraction that has a numerator that is greater than or equal to the denominator;example 45/6
ordered pair a pair of numbers used to locate a point in the coordinate system;example (-5, 14)