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 extrem

---

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, vintage line drawing or engraving illustration.

---

Size: 5000px × 2727px
Photo credit: © Patrick Guenette / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: art, black, drawing, engraved, engraving, extremes, geometric, illustration, line, polygon, proofs, proportion, proportions, quadrilateral, theorems, vector, vectors, vintage, white