Here are the definitions matched to the correct vocabulary terms:
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Rational Number: A number that can be expressed as a ratio of two integers with a nonzero denominator.
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Radical: A mathematical expression indicating a root by means of a radical sign √.
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Perfect Square: The square of an integer is a Perfect Square.
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Exponent: Indicates how many times the base is used as a factor.
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Irrational Number: A number that cannot be expressed as a ratio of two integers.
You can arrange them according to this matching.