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2.6 绘制圆
1.命令输入方式
命令行:CIRCLE。
菜单栏:绘图(D)→圆。
工具栏:绘图→。
命令别名:C。
2.操作步骤
AutoCAD 2014提供了多种绘制圆的方法,如图2-19所示。
![](https://epubservercos.yuewen.com/58560F/16948915405054206/epubprivate/OEBPS/Images/179.jpg?sign=1738884692-qGHCmlyRzawHGlm0OkhJnsD906jTZEwk-0-fcdb47625e854ebbdb025821748150fb)
图2-19 “圆”下拉菜单
(1)根据圆心和半径绘制圆(圆心,半径)
![](https://epubservercos.yuewen.com/58560F/16948915405054206/epubprivate/OEBPS/Images/180.jpg?sign=1738884692-ZJkzOISeLgcfRjI6ejrurwsjCNDRBl3x-0-68fa01b1c680fd6eaa03e7b16674593a)
(2)根据圆心和直径绘制圆(圆心,直径)
![](https://epubservercos.yuewen.com/58560F/16948915405054206/epubprivate/OEBPS/Images/181.jpg?sign=1738884692-wg3fgPKBYLpg6mQSeHlhUdJD442EEq1i-0-b1e5cf9d301d8a728f99c4e65960585c)
(3)根据两点绘制圆(两点)
![](https://epubservercos.yuewen.com/58560F/16948915405054206/epubprivate/OEBPS/Images/182.jpg?sign=1738884692-etABOemNUQ9HwtMAaVD790LGs0C3budb-0-266f9657f3449ccf24eaf8f09f8c4226)
执行结果:绘制了如图2-20a所示的圆。
![](https://epubservercos.yuewen.com/58560F/16948915405054206/epubprivate/OEBPS/Images/184.jpg?sign=1738884692-tgZeEck3BpwklDaoMSnYk7nIz4paSzrg-0-156da2bd6802ec1ec3018fcb19397567)
图2-20 绘制圆
a)两点绘制圆 b)三点绘制圆
(4)根据三点绘制圆(三点)
![](https://epubservercos.yuewen.com/58560F/16948915405054206/epubprivate/OEBPS/Images/183.jpg?sign=1738884692-Yfhq0fAedu8luLVnGERZm9G6Uz7YZqC2-0-39065e35c5b68c75adcf796490d12a83)
执行结果:绘制了如图2-20b所示的圆。
(5)绘制与两个对象相切指定半径的圆(相切,相切,半径)
![](https://epubservercos.yuewen.com/58560F/16948915405054206/epubprivate/OEBPS/Images/185.jpg?sign=1738884692-Re8Wq04MNC6tbdnY9WRTeUnvcNjbxKYH-0-6855813c946265cb9865c1f215b96762)
执行结果:绘制了与两个给定对象相切的圆,如图2-21a所示。
![](https://epubservercos.yuewen.com/58560F/16948915405054206/epubprivate/OEBPS/Images/046.jpg?sign=1738884692-1RL9jhmQNA92Y2P66hPZZYPnDn3nRw9e-0-c6395dd363a74c72015a32415506795b)
图2-21 绘制与已知对象相切的圆
a)绘制与两对象相切指定半径的圆 b)绘制与三个对象相切的圆
(6)绘制与三个对象相切的圆(相切,相切,相切)
选择“绘图”→“圆”→“相切,相切,相切”菜单命令,此时命令行提示:
![](https://epubservercos.yuewen.com/58560F/16948915405054206/epubprivate/OEBPS/Images/045.jpg?sign=1738884692-TesNrjSzdbwKNuCuo3jFJvGbZtXy5Jot-0-811e3f03978df664890f8a28a88e48cb)
执行结果:绘制了与三个给定对象相切的圆,如图2-21b所示。