![]() ![]() If we were to work our way around the circle in reverse we would have the + X axis as 0 or 360 still but our Y axis would become -90, our X axis would become -180 and our +Y axis would become -270 as shown below. If you think of this as a complete circle you could also state that + X axis is 360. The positive X axis is always 0 in AutoCAD and the positive Y axis is always 90 this would make the negative X axis 180 and the negative Y axis 270. Just like on a graph in Math we have a positive and a negative X axis and a positive and negative y axis. To use a UCS we need to understand some basic Math Principals. When we work in 2D we ignore the Z axis completely. The UCS system works on a grid system with the X,Y plane being the 2D plane and the Z axis being the 3D or Extrusion plane. They will help in in the long run, I promise! Everything in AutoCAD is EXACT The most important thing in AutoCAD is understanding how a UCS (Universal Coordinate System (also known as the Cartesian Plane)) Works and how to use it to your benefit. ![]() Follow all the steps so you can learn all the skills. 1 Basic 2D drawing skills in AutoCAD 2017 This Tutorial is going to teach you the basic functions of AutoCAD and make you more efficient with the program.
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