Autocad 2018 Draw Circle Relative to Shape

Circles and Ellipse command

Circles

The circles are widely used in design and drawings.

The circle command is used to draw a circle by specifying the center point and radius.

Permit'due south understand by two examples.

Instance 1:

The steps to create a circle are given beneath:

1. Click on the Circle icon on the Ribbon Panel, as shown in the below image:
   
   OR
   Type Circumvolve or C on the command line and press Enter.
2. Specify the center point of a circle on the workspace or viewport.
3. Specify the radius of the circle.
   Or
   To specify bore, blazon D - press Enter - specify the bore of the circle.
4. Press Enter.

Example 2:

We can also create the circle randomly. The steps are listed below:

1. Click on the Circle icon on the Ribbon Panel, equally shown in the below image:
   
   OR
   Type Circumvolve or C on the command line and press Enter.
2. Specify the eye point of a circle on the workspace or viewport.
3. Specify the endpoint of the radius through the cursor.

Types of Circles

At that place are three types of circles, which are listed below:

1. 2 point circumvolve
2. 3 point circle
3. Tangent circle

1) two Point circle

We can create a circle by specifying the two endpoints.

The altitude betwixt the two specified endpoints will be considered as the diameter of that circle.

Let's empathize with an example.

Example: A circle between ii lines.

The steps to create a two-bespeak circle are listed below:

1. Select the 2-Bespeak circumvolve choice from the drop-downwards list of the circle, as shown in the below epitome:
   
   Or
   Type C or Circle on the command line - Press Enter- type 2P - printing Enter.
2. Click on the first endpoint of a circle diameter. We can also blazon the value to specify the endpoint.
3. Click on the 2nd endpoint of a circle bore through the cursor, as shown in the below epitome:
   
   We tin can specify the endpoints according to the requirements.
4. The circle volition be created, as shown in the beneath paradigm:

2) three Signal circle

We can create a circle past specifying the three endpoints.

Let'due south understand with an example.

Case: A circle betwixt three edges.

The steps to create a three-bespeak circle are listed below:

1. Create three edges.
2. Select the 3-Signal circle selection from the drop-down list of the circle, as shown in the below image:
   
   Or
   Type C or Circle on the command line - Press Enter- type 3P - press Enter.
3. Click on the showtime point.
4. Click on the second point.
5. Click on the third point.
   The three points are shown in the below prototype:
   
6. The circle volition exist drawn, equally shown in the below image:

Tangent circle

The tangent circle command is used to draw circles on the tangent.

There are two types of the tangent circle, that appear on the drop-downward listing of the circle icon on the ribbon panel, every bit shown in the below prototype:

Let's understand with three examples.

Instance i: Tan, Tan, Radius

The steps to create a Ttr (Tangent tangent radius) circle are listed below:

1. Draw two lines in the viewport, as shown in the beneath epitome:
   
2. Select the Tan, Tan, Radius circle pick from the drop-down list of the circle on the ribbon console.
   Or
   Type C or Circle on the control line - Press Enter- type ttr - press Enter.
3. Click on the offset point on the first tangent.
4. Click on the second point on the other tangent.
5. Specify the radius of the circle. For example, 4.
6. The circumvolve will exist drawn on the two tangents, as shown in the below image:

The circle will be adapted according to the specified radius.

Instance ii: Tan, Tan, Tan

The steps to create a (Tangent tangent tangent) circle are listed below:

1. Describe three lines on the viewport, as shown in the beneath epitome:
   
2. Select the Tan, Tan, Tan circumvolve pick from the drib-downwards list of the circle.
3. Click on the get-go point on the start tangent.
4. Click on the 2nd point on the second tangent.
5. Click on the tertiary point on the third tangent.
6. The circle will be drawn on the three tangents, equally shown in the beneath image:

We can modify the tangent and points according to the requirements.

Instance 3: Tan, Tan, Radius

To create a circle inside a triangle

The steps to create a circle inside a triangle are listed below:

1. Draw a triangle in the viewport, as shown in the below image:
   
2. Select the Tan, Tan, Radius circumvolve option from the drop-downwards listing of the circumvolve. Or
   Blazon C or Circle on the control line - Printing Enter- type ttr - press Enter.
3. Click on the first signal on one side of the triangle.
4. Click on the second and tertiary points on the other side of the triangle.
5. The circle will exist drawn inside the circle, as shown in the below epitome:
   

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Source: https://www.javatpoint.com/autocad-circles-and-ellipse-command

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