Lateral Area of A Prism Small 320×240 Medium 640×479 Large 1024×767 Download Tiff Original 2400×1798 | (396.3 KB) Description Diagram used to prove the theorem: "The lateral area of a prism is equal to the product of a lateral edge by the perimeter of a right section." Keywords Edge, edges, lateral area, prism, prisms Galleries Geometric Theorems and Proofs Source: Arthur Latham Baker The Elements of Solid Geometr with Numerous Exercises (Boston, MA: Ginn & Company, 1893)