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 lines or concentric arcs and circles.

Procedure:

1. Enter the distance of the concentric or parallel entity from the original entity into the options toolbar shown at the top or in the command line.
2. Enter the number of entities to create in the options toolbar.
3. Click the base entity. The parallel or concentric entity is created on that side on which the mouse cursor is located while selecting the entity.