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# Math Vocabulary 1

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TermDefinition
proportion An equation stating that two ratios or rates are equivalent.
origin The point of intersection of the x-axis and the y-axis in a coordinate systems.
algebra A mathematical language that uses symbols, usually letters, along with numbers.
area The number of square unites needed to cover the enclosed (inside) 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.
radiuas The distance from the center of the circle to any point on the circle.
yard A customary unit of length equal to 3 feet, or 36 inches.
Order of operation The rule that tells which operation to perform first when more than one operation is used (PEMDAS) (17 letters)
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 separated by a x-axis and a y-axis.
mode The number(s) or item(s) that appear most often in a set of data.
perimeter The distance around ant closed geometric figure.
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 unite of length
median The middle number in a set of data when the data are arranged in numerical order. If the data has an even number, the two middle numbers are added together and then divide by 2.
equivalent Having the same value...for instance 1 1/2, = 2/4
mixed number The sum of a whole number and a fraction... for instance 1 1/2, 2 1/2.
reciprocals Any two numbers that have a product of 1...(flip flops).
chord A segment with endpoints that are on a circle.
ratio A comparison of two quantities by division...for instance, 3;4 or 3/4.
Obtuse angle An angle that measures greater than 90 degrees, but less than 180 degrees.
decimals Numbers that have digits in the tenths, hundredths, thousandths 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 equal to the denominator: example 45/6
order pair A pair of numbers used to lactate a point in the coordinate systems: example, (-5, 14).
Created by: JamesRip