启动AutoCAD软件，在作图区画一个圆。在“功能区”选项板的“常用”选项卡中，单击“绘图”按钮，在打开的下拉菜单中选择“定数等分”按钮。
选择“圆”为定数等分的对象，单击鼠标左键，输入要等分的线段数目为5，按Enter键确定，效果如图所示。
定数等分是将所选对象按指定的线段数目等分。还可以通过，在命令行中输入divide命令启用定数等分，或在菜单栏中选择“绘图-点-定数等分”命令。
知识点词条：定数等分
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