Engineers use geometry to study and analyze shapes and the relationships that transpire among them. Geometry is used in most fields of engineering, although it sees the most use in the area of civil engineering. Civil engineers use geometry to understand how to design and build infrastructure such as roads, bridges and dams.
For engineers, having a knowledge of geometry is critical for properly sizing and structuring physical objects. Engineers use geometry to identify key shapes, such as triangles, cubes and pyramids, and to compute quantities like lengths, volumes, centroids, and movements of inertia, lines and curves. Geometry is also used to reduce friction and determine the porosity of soil.