CAD (computer-aided design) CAM (computer-aided manufacturing) Pascal's theorem Brianchon's theorem Euclid similar geometry
Much of CAD (computer-aided design) and CAM (computer-aided manufacturing) is based on Euclidean geometry. Design geometry typically consists of shapes bounded by planes, cylinders, cones, tori, and other similar shapes. In the present day, CAD/CAM is essential in the design of almost everything, including cars, airplanes, ships, and smartphones. A few decades ago, sophisticated draftsmen would learn fairly advanced Euclidean geometry, including things like Pascal's theorem and Brianchon's theorem, but in modern times this is no longer necessary.
