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# Math Vocabulary

TermDefinition
Proportion An equations stating that two ratios or rates are equivalent.
Origin The point of intersection of the x-axis and the y-axis in a coordinate system.
Algebra A mathematical language that uses symbols, usually letter, along with #.The letters stand for unknown #.
Area The # of square units needed to cover the enclosed (inside) surface.
Equation A mathematical sentence that contains an (=) sign.
Mean the sum of the # in a set of data divided by the # of pieces of data.
Radius 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 in.
Order of operations The rule that tell which operation to perform first when more than one operation is used.
Diameter The distance across a circle through the center.
Rhombus A parallelogram with all sides congruent.
Quadrent One of the four regions in a coordinate plane separated by an x-axis and a y-axis.
Mode The # or item that appear most often in a set of data.
Perimeter The Distance AROUND any 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 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 the data has an even number, the two middle # are added together and then divided by 2.
Equivalent Having the same value....for instance, fraction that have the same #.
mixed numbers The sum of a whole number and a fraction...for instance 1 1/2 2 1/2.
Reciprocal Any 2 # that have the same product of 1.
Chord A segment with endpoints that are on a circle.
Obtuse angle An angle that measures greater than 90 degrees, but less than 180 degrees.
Ratio A comparison of 2 quantities by division....for instance, 3:4 or 3/4
Decimals # 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 or equal to the denominator.
Ordered pair A pair of # used to locate a point in the coordinate system.
Created by: townsleya111504