2.2.3 - Draw a Circle

To draw a Circle, you can specify varius combinations of center, radius, diameter, points on the circumference and tans.
The default method is to specify the center and the radius.

There are and other ways to draw a circle depending on the available data.

You can access the Circle command through the following:

  1. Keyboard : Type in circle and press Enter
  2. Cascading menus : Draw ►Circle ►Center, Radius
  3. Toolbar icon : Draw toolbar (icon)
  4. Ribbon : Home tab ►Draw panel ►Circle

To draw Circles in this tutorial, you will use now the Ribbon, to insert the Circle command.

On Ribbon ► Click Home tab ► Draw panel ► Click the Circle tool icon acad icon circle 4872 .

You will see the drop-down menu with the various methods to draw a circle (Fig.2.2.3.1), with combinations of center, radius, diameter, points tanses.

- Draw a Circle by specifying a center and radius.

From the drop-down menu of Circle select the Center-Radius.

Fig.2.2.3.1 - Create a Circle using the Ribbon

Fig.2.2.3.1 - Create a Circle using the Ribbon

  1. Commandline prompt says:Specify center point of circle or [ 3P/2P/Ttr (tan tan radius)] : Using the mouse , click near the point P1 on the screen , or for more accuracy type on the Command prompt: 5, 5 to insert the coordinates of the first point P1, and define the first point of the arc..
  2. Commandline prompt says:Specify radius of circle or [Diameter] : Pick with your mouse the second point near to P2 or or for more accuracy on the Command prompt: type 18 to insert the length of the circle.

If you are already using the Circle command and you right-click, you will get the drop-down menu as shown in Fig.2.2.3.1 and then you can use any of its tools to draw the circle.

Fig. 2.2.3.3 - Draw a Circle by Center and Radius

Fig. 2.2.3.3 - Draw a Circle by Center and Radius

- Draw a Circle by specifying a center and diameter.

From the drop-down menu of Circle (Fig.2.2.3.1), select the Center-Diameter tool.

  1. Commandline prompt says:Specify center point of circle or [ 3P/2P/Ttr (tan tan radius)] : Using the mouse , click near the point P1 on the screen , or for more accuracy type on the Command prompt: 5,5 to insert the coordinates Χ, Υ) of the first point P1, and define the first point of the arc..
  2. Commandline prompt says:Specify radius of circle or [Diameter] : type d and press Enter,
  3. Commandline prompt says: Specify diameter of circle < > : Pick with your mouse a point to specify the length of diameter or or for more accuracy on the Command prompt: type 36 to insert the length of the diameter of the circle.

Fig.2.2.3.3 - Draw a Circle by Center and Diameter

Fig.2.2.3.3 - Draw a Circle by Center and Diameter

- Draw a Circle tangent to two objects.

You will create a circle with a specified radius =4, tangent to the lines A1 and A2 (Fig.2.2.3.4)

From the drop-down menu of Circle select the Tan, Tan, Radius.

  1. Commandline prompt says: Specify point on object for first tangent of circle : Using the mouse , select the line A1to define the first tangent object .
  2. Commandline prompt says:Specify point on object for second tangent of circle : Using the mouse , select the line A2 to define the second tangent object .
  3. Commandline prompt says:Specify radiusof circle < > : type 4 to insert the length of the radius of the circle.

Fig.2.2.3.4 - Draw a Circle using and Center and 2 Tangets

Fig.2.2.3.4 - Draw a Circle using and Center and 2 Tangets


Phoca_GAE-r1

AutoCAD Tutorials (categ.)