Acute Angle
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An angle less than 90 degrees
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Addend
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A number added to one or more others
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Algebraic Expression
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An expression that contains at least one variable
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Area
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The amount of surface a figure covers
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Balance
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Having the same weight on either side
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Chord
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The line segment between two points on a given curve
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Circle
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A closed plane
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Circumference
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The perimeter of a circle
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Closed Curve
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A curve that is continuous with meeting end points
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Coefficient
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A number which multiplies a variable
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Complementary
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Two angles whose measures add up to 90 degrees
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Composite Number
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A whole number greater than 1 that is not prime
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Cone
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A solid shape with an elliptical or circular base and a curved surface that tapers to a point
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Congruent
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Having the same shape and the same size
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Constant
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A quantity having a fixed value that does not change, such as a number
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Cubed
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Raised to the power of 3
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Cylinder
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A solid shape with one curved surface and to congruent circular bases
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Denominator
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Bottom number in a fraction telling how many parts a whole is divided into
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Difference
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The result of subtracting one number from another
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Dividend
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Number being divided by another number
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Divisible
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Can be divided by another number without leaving a remainder
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Divisor
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Number that another number is being divided by
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Equation
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A mathematical sentence stating that two expressions are equal
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Equilateral Triangle
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A triangle with all sides equal
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Equivalent Fractions
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Two fractions naming the same amount
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Experimental Probability
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Probability based on actually performing an experiment
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