Do not be in a hurry to rush through the tutorials. Build up your CAD skills by familiarizing yourself with the commands and options demonstrated, along with the concepts discussed in the lessons. Feel free to repeat, at any time, any of the lessons. ...

Geometric Construction Basics

• Create and Save AutoCAD Drawing Files
• Use the AutoCAD LT Visual Reference Commands
• Draw, Using the LINE and CIRCLE Commands
• Use the ERASE Command
• Define Positions Using the Basic Entry Methods
• Use the Pan Realtime Option

In order to become effective in using a CAD system, we must learn to create geometric entities quickly and accurately. In learning to use a CAD system, lines and circles are the first two, and perhaps the most important two, geometric entities that we need to master the skills in creating and modifying. Straight lines and circles are used in almost all technical designs. In examining the different types of planar geometric entities, we can see that triangles and polygons are planar figures bounded by straight lines. Ellipses and splines can be constructed by connecting arcs with different radii. As we gain some experience in creating lines and circles, similar procedures can be applied to create other geometric entities. In this lesson, we will examine the different ways of creating lines and circles in AutoCAD

Select the AutoCAD LT 2005 option on the Program menu or select the AutoCAD LT 2005 icon on the Desktop. Once the program is loaded into memory, the AutoCAD LT 2005 drawing screen will appear on the screen
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