QCad User Reference Manual

## Circles

### Circle with Center and Point

CAD Toolbar:

Menu:

Draw - Circle - Center, Point

Command:

?

Hotkey:

ci

Description:

A circle with a given center and a point on the circle line can be created using this tool.

Procedure:

1. Set the center of the circle using the mouse or enter a co-ordinate in the command line.
2. Define the radius by clicking a point on the circle line or by entering a co-ordinate into the command line. You may also enter the radius directly in the command line.

### Circle with Center and Radius

CAD Toolbar:

Menu:

Draw - Circle - Center, Radius

Command:

?

Description:

This tool lets you create circles with a given center and radius.

Procedure:

1. Enter the radius in the option toolbar or use the command `radius` , `rad` or `r` to enter the radius on the command line.
2. Set the center of the circle using the mouse or enter a co-ordinate in the command line.

### Circle with 2 Points

CAD Toolbar:

Menu:

Draw - Circle - 2 Points

Command:

?

Description:

Draws circles with two diametrically opposed points.

Procedure:

1. Set the first point using the mouse or enter a co-ordinate in the command line.
2. Set the second point.

### Circle with 3 Points

CAD Toolbar:

Menu:

Draw - Circle - 3 Points

Command:

?

Description:

If you know any three points on the circle line of a circle, you can use this tool to create circles.

Procedure:

1. Set the first point using the mouse or enter a co-ordinate in the command line.
2. Set the second point.
3. Set the third point.

### Concentric Circle

CAD Toolbar:

Menu:

Draw - Circle - Parallel

Command:

?

Options Toolbar:

Description:

With this tool you can create parallels to existing line, arc and circle entities.

Procedure:

1. Enter the distance of the parallel from the original entity into the options toolbar shown at the top or enter `distance` , `dist` or `d` in the command line, followed by the distance.
2. Click the entity to which you want to create a parallel. The parallel is created on the side on which the mouse cursor is located while selecting the entity.