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The number of square uinits needed to cover a suface. 


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A triangle in which all 3 angles are acute. 


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An angle that has a measure less then a right angle(90 degrees) 


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An arrangement of objects in rows and columns. 


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From least to greatest number 


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The number found by dividing the sum of a set of numbers by the number of addends. 


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The horizontal or vertical number line used in a coordinate plane; the line at the side or bottom of a graph 


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