In this chapter,the different ways of creating lines and circles in AutoCAD 2007 are examined.CopyrightedMaterialStarting Up AutoCAD 20071. As one gains some experience in creating lines and circles,similar procedures can be applied to create other geometric entities.
Ellipses and splines can be constructed by connectingarcs with different radii. Triangles and polygons are planarfigures bounded by straight lines. In examining the different types of planar geometric entities, theimportance of lines and circles becomes obvious. Straight lines and circles are used in almostall technical designs. In learning to use a CAD system, lines and circles arethe first two, and perhaps the most important two, geometric entities that one shouldmaster the skills of creating and modifying. The method and number of operations that are required to accomplishthe constructions are different from one system to another.In order to become effective in using a CAD system, we must learn to create geometricentities quickly and accurately. All CAD systems create designs using basic geometric entities.Many of the constructions used in technical designs are based upon two-dimensionalplanar geometry. This will require learning some new concepts and skills as well as learning adifferent vocabulary.
It is necessary tobegin with the basic alphabet and learn how to use it correctly and effectively throughpractice. ShihOregon Institute of TechnologyMultiMedia CD byINSIDE:Jack ZecherIndiana University Purdue University IndianapolisMultiMedia CDby Jack ZecherSDCPUBLICATIONSAn audio/visualpresentation of thetutorial exercisesSchroff Development CorporationVisit our website to learn more about this and other books:ĪutoCAD 2007 TutorialCopyrightedMaterialChapter 1 AutoCAD FundamentalsCopyrightedMaterialCopyrightedMaterial Create and Save AutoCAD DrawingFiles Use the AutoCAD Visual ReferenceCommands Draw, Using the LINE and CIRCLECommands Use the ERASE Command Define Positions Using the Basic EntryMethods Use the AutoCAD Pan Realtime OptionCopyrightedMaterial1-1ġ-2AutoCAD 2007 TutorialCopyrightedMaterialIntroductionLearning to use a CAD system is similar to learning a new language. AutoCAD 2007 TutorialFirst Level: 2D FundamentalsText byRandy H.
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