Surfaces that can be represented by equations of degree two – spheres, ellipsoids, paraboloids, hyperboloids, and cones – have long been discussed in courses on descriptive and solid geometry, ...

Known as the father of descriptive geometry, Gaspard Monge (1746–1818) was born in Beaune, Burgundy in France. Attending college at an early age, Monge showed mathematical talent early on. He drew a ...

Children can normally be expected to copy a circle at 3, a square at 4, and a triangle at 5 years of age on standard 8½ X 11-inch paper. This study hypothesized that the shape of the background paper ...