APPENDIX A Making Isometric Drawings
Long before the AutoCAD® program existed, architects and engineers used isometric projection as a method to visually represent 3D objects on 2D paper. You can replicate this traditional method in AutoCAD by making 2D isometric drawings as a simpler alternative to true 3D modeling (with its complex feature set and corresponding learning curve).
One practical advantage of using isometric projection is that you can measure any side of an object and it will always be true to scale. In fact, the word isometric means “same measure.” The three isometric axes (left, top, and right) are equally scaled in isometric and always appear with a common 120-degree angle between them, as shown in Figure A.1.
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