The Research on the New Method of Graphical Solution and Three Dimensional Drawing in Descriptive Geometry Under the Circumstance of AutoCAD

We make drawings and graphical soultions in course descriptive geometry and engineering drawing by using the drawing software AutoCAD R14. If we adopt traditional ways of descriptive geometry, it is not convenient to display its graphic steps on computer screen, projections and three-dimensional pictorial drawing cannot be drawn and displayed simultaneously, the actual shape of the geometric elements and the relation between these elements and three projections planes cannot be displayed clearly. Therefore a new way is exploited to solve the above problems. It can draw the third projection or view and axonometric projection, while two known projections or views are being interpreted. Moreover, many graphic solution problems on engineering drawing will been solved.