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11 Cards in this Set
- Front
- Back
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Cross-Product Property
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the product of extremes of a proportion is equal to the product of the means
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extended proportion
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statement that has three or more ratios are equal
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geometric mean
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the number x such that (a/x) = (x/b) where a, b and x are positive numbers
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golden ratio
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the ratio of the length of a golden rectangle to its width; the value about 1.62
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golden rectangle
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a rectangle that can be divided into a square and a rectangle that is similar to the original rectangle
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indirect measurement
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a way of measuring things that are difficult to measure directly
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proportion
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a statement that two ratios are equal
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scale
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ratio of any length in a scale drawing to the corresponding actual length
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scale drawing
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a drawing in which all the lengths are proportional to corresponding actual lengths
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similar
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when corresponding angles are congurent and corresponding sides are proportional
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similarity ratio
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ratio of lengths of corresponding sides of two similar figures
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