Visualizing three-dimensional figures, such as quadratic surfaces, on a two-dimensional sheet requires techniques like isometric drawing and 3D projection. Effective two-dimensional renderings should convey enough visual information, including perspective, to clarify the three-dimensional shape. Transforming 3D coordinates (x, y, z) into 2D points involves understanding vector representation and perspective transformation. Resources like Wikipedia can provide foundational knowledge on these topics, though they may be less helpful for complex concepts. Mastering these visualization techniques enhances comprehension of three-dimensional graphs.