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