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16 Cards in this Set
- Front
- Back
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congruent
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having the same measure
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constant of proportionality
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A relationship that can be described by y=kx where k is the constant ratio. It is also the unit rate.
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corresponding parts
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Angles and sides that are in the same location in similar figures
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cross products
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A method used to find the missing number in a proportion
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dilation
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A transformation that enlarges or reduces a figure by a scale factor.
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indirect measurement
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Using the properties of similar triangles to find the measurements that are difficult (if not impossible) to measure directly
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nonproportional
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A relationship is said to be "nonproportional" when there is no constant rate or ratio
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proportion
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An equation where 2 rates or ratios are equal
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proportional
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A relationship is said to be proportional when the quantities have a constant ratio or rate
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rate
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A ratio of 2 quantities having different kinds of units
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ratio
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A comparison of 2 quantities by division
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scale
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A ratio that tells you how the drawing or model relates to the actual size
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scale drawing or scale model
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is used to represent an object that is either to small or to large to be drawn or built in actual size
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scale factor
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The number you multiply by to either scale up or down to its actual size
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similar figures
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Figures that are the same shape but not necessarily the same size
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unit rate
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When a rate has a denominator of 1
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