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| Acceleration | The rate of change of speed over time. For motion along the number line, acceleration is a scalar. For motion on a scalar or through space, acceleration is a vector. |
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| Acute |  Angle measuring less than 90 degrees. |
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| Algebra |  Area of maths where numbers are represented by letters |
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| Altitude | Height above the earth's surface |
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| Arc |  Section of a curve, part of a circle |
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| Area | The size a surface takes up, measured in square units |
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| Arithmetic |  Area of mathematics that includes: addition, subtraction, multiplication, division of; whole numbers, fractions and decimals. |
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| Ascending Order | Arranged from smallest to largest. |
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| Assymetry | Not symetrical |
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| Average | The total of all scores, divided by the how many scores there were. |
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| Axis | 
Real or imaginary reference line. |
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