Geometry
The study of geometric figures in two dimensions (plane geometry) and three dimensions (solid geometry). It includes the study of points, lines, triangles, quadrilaterals, other polygons, circles, spheres, prisms, pyramids, cones, cylinders, and polyhedra. Geometry typically includes the study of axioms, theorems, and twocolumn proofs.
Among the various types of geometry are analytic geometry, Euclidean geometry, and nonEuclidean geometry.
