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8th Grade Math

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Absolute Value   The distance of a number from zero.  
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Cartesian Coordinates   A system in which points on a plane are identified by an ordered pair of numbers, representing the distances to two or three perpendicular axes.  
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Dependent Events   Two events in which the outcome of the second is influenced by the outcome of the first.  
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Ellipse   The set of all points in a plane such that the sum of the distances to two fixed points is a constant.  
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Irrational Number   A number that cannot be expressed as the ratio of two integers.  
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Mutually Exclusive   Two or more events that cannot occur at the same time.  
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Natural Numbers   The set of all positive integers, not including zero. Also know as the counting numbers.  
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Pi   The ratio of the circumference of a circle to its diameter.  
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Origin   The point (0, 0) on a coordinate plane, where the x-axis and the y-axis intersect.  
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Square Root   The square root of x is the number that, when multiplied by itself, gives the number, x.  
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