AUTOCAD是目前使用最多的绘图软件之一，利用它可以方便的绘制机械工程图，建筑工程图，和装修工程图等，在使用这个软件绘图时，使用者可以利用基本灰土命令方便的绘制出圆、椭圆、圆弧、椭圆弧、直线、和多边形等基本图形元素，然后再利用这些基本图形元素通过编辑绘制出复杂的图形，此外，软件还提供了完善的坐标系管理功能，以及包括捕捉、追踪在内的各种辅助绘图手段。本论文先简单的介绍了基本图形的绘制方法（包括二维、三维基本图形元素），然后再结合实际工程造中的具体应用，绘制了一个大楼的立面图和一座方形配楼。
參考答案:AUTOCAD is one of the most populous plotting software.It can be used to draw mechanical ,architecture and fitment engineering plot conveniently.When using this software,the user can use the basic lime orders to plot basic figures of circle,ellipse,circle arc,ellipse arc,beeline and polygon etc.,then,by editting these basic figures,the complicated figures can be plotted.Besides,the software provides pefect coordinate management function,and plotting assistant measures include catching,tracing,etc..This paper at first introduces the drawing methods of basic figures(including planar and three-dimensional basic figures).After that,I plot an elevation of a building and its quadrate annex,with the combination of its practical application in engineering.