A geodesic dome is a structure based on a network of triangles that form a geodesic. Depending on the sizes of the dome and the triangles, a geodesic dome's shape is approximately spherical. The edges of the triangles form geodesic lines which are circular sections on the surface of the sphere.
These domes are among the largest and most structurally sound man-made objects. They are also extremeley lightweight and cheap to produce. Geodesic domes have numerous modern applications in industrial, the military, and housing.