Using Logic Array to Draw Circle

Circles and Ellipse command

Circles

The circles are widely used in design and drawings.

The circumvolve command is used to draw a circumvolve by specifying the centre betoken and radius.

Let's empathise past ii examples.

Instance 1:

The steps to create a circumvolve are given beneath:

1. Click on the Circumvolve icon on the Ribbon Console, as shown in the below image:
   
   OR
   Type Circle or C on the control line and press Enter.
2. Specify the middle indicate of a circle on the workspace or viewport.
3. Specify the radius of the circumvolve.
   Or
   To specify diameter, type D - press Enter - specify the diameter of the circle.
4. Press Enter.

Example 2:

Nosotros 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 Circle or C on the command line and press Enter.
2. Specify the centre point of a circle on the workspace or viewport.
3. Specify the endpoint of the radius through the cursor.

Types of Circles

In that location are three types of circles, which are listed below:

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

1) 2 Point circle

We can create a circle by specifying the 2 endpoints.

The altitude between the two specified endpoints will exist considered equally the bore of that circle.

Let'due south understand with an example.

Example: A circle between two lines.

The steps to create a ii-point circle are listed below:

1. Select the 2-Point circumvolve option from the drop-down list of the circumvolve, as shown in the below epitome:
   
   Or
   Type C or Circumvolve on the command line - Press Enter- type 2P - press Enter.
2. Click on the first endpoint of a circle diameter. We can also type the value to specify the endpoint.
3. Click on the second endpoint of a circumvolve bore through the cursor, every bit shown in the below image:
   
   We tin specify the endpoints co-ordinate to the requirements.
4. The circumvolve will be created, as shown in the below image:

2) 3 Point circle

We tin create a circle past specifying the three endpoints.

Allow's empathize with an case.

Example: A circumvolve betwixt iii edges.

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

1. Create three edges.
2. Select the 3-Point circumvolve selection from the driblet-downwardly list of the circle, equally shown in the below image:
   
   Or
   Blazon C or Circle on the command line - Press Enter- blazon 3P - printing Enter.
3. Click on the first signal.
4. Click on the second point.
5. Click on the third point.
   The iii points are shown in the below image:
   
6. The circle will be drawn, as shown in the beneath image:

Tangent circle

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

At that place are two types of the tangent circle, that announced on the drib-downwards list of the circumvolve icon on the ribbon panel, equally shown in the below image:

Let'southward understand with iii examples.

Instance 1: Tan, Tan, Radius

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

1. Describe ii lines in the viewport, as shown in the beneath epitome:
   
2. Select the Tan, Tan, Radius circle selection from the drop-down listing of the circle on the ribbon panel.
   Or
   Type C or Circle on the command line - Press Enter- type ttr - press Enter.
3. Click on the first signal on the first tangent.
4. Click on the 2nd point on the other tangent.
5. Specify the radius of the circle. For example, four.
6. The circle will be drawn on the two tangents, equally shown in the beneath image:

The circle will be adjusted according to the specified radius.

Case 2: Tan, Tan, Tan

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

1. Draw three lines on the viewport, as shown in the below image:
   
2. Select the Tan, Tan, Tan circle choice from the drop-down listing of the circle.
3. Click on the first betoken on the showtime tangent.
4. Click on the second signal on the second tangent.
5. Click on the tertiary bespeak on the tertiary tangent.
6. The circle will be drawn on the 3 tangents, every bit shown in the below paradigm:

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

Case 3: Tan, Tan, Radius

To create a circumvolve within a triangle

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

1. Depict a triangle in the viewport, every bit shown in the below image:
   
2. Select the Tan, Tan, Radius circle selection from the drop-down list of the circle. Or
   Blazon C or Circle on the command line - Press Enter- type ttr - press Enter.
3. Click on the first point on i side of the triangle.
4. Click on the 2nd and 3rd points on the other side of the triangle.
5. The circle will exist drawn inside the circle, as shown in the below image:
   

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

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