Construcción de Cono en perspectiva isométrica y su sombra

In this video, we learn how to construct a cone in isometric perspective using the method of "drawing the tangents to an ellipse from a point located on the extension of one of its axes." A long-winded name for a very simple procedure, don't be afraid of it. By extending the minor axis, I construct the cone itself, and by extending its major axis, I obtain the construction of its shadow. Bibliography: "TREATISE ON TECHNICAL DRAWING: ORTHOGONAL PROJECTIONS" by Ernesto Romero. Page 85