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Model Of Geometric Proportions
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Description: An illustration showing a model that illustrates the following relationships: a:b = c:d, ad = bc. Product of the means equals the product of the extremes.
Source: Albert A. Hopkins Scientific America: Handy Book Of Facts And Formulas (New York: Munn & Co., Inc., 1918) 41
Keywords: model of geometric proportions, proportion, proof, theorem, quadrilateral, polygon relationships, geometric relationships, means, extremes, cross-multiplying
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