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# Math Vocabulary - Middle School

A vocabulary activity that test the students knowledge of basic math terms.

AB
Acute AngleAn angle whose measure is greater than zero but less than 90 degrees
bisectto divide into two congruent parts
congruenthaving the same size and shape
diameterA chord that passes through the center of a circle
obtuse angleAn angle whose measure is greater that 90 degrees but less than 180 degrees
ratioA comparison of two numbers
x-axisThe horizontal axis on a coordinate plane
y-axisThe vertical axis on a coordinate plane
variableA letter used to represent one or more numbers in an expression, equation or inequality
scalene triangleA triangle with no congruent sides
Isosceles triangleA triangle with two congruent sides
circumferenceThe distance around a circle
least common denominatorThe smallest common multiple of two or more denominators
quadrantOne of the four regions of the coordinate plane
radiusA line segment with one endpoint at the center of the circle and the other endpoint on the circle
angleA geometric figure formed by two rays that have a common endpoint
equilateral triangleA triangle with three congruent sides and three congruent angles
irrational numberA number that cannot be expressed as a repeating or terminating deciamal
rational numberAny number that can be expressed as a ratio, a/b, where a and b are integers and b does not equal zero
PiThe ratio of the circumference of a circle to the length of its diameter