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QCad User Reference Manual
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19. Circles
19.1. Circle with Center and Point
CAD Toolbar:
Menu:
Draw - Circle - Center, Point
Hotkey:
ci
Command:
circle
Description:
Constructs a circle with a given center and a point on the circle
line.
Procedure:
- Set the center of the circle using the mouse or enter a coordinate in
the command line.
- Define the radius by clicking a point on the circle line or by
entering a coordinate into the command line. You may also enter the
radius directly in the command line.
19.2. Circle with Center and Radius
CAD Toolbar:
Menu:
Draw - Circle - Center, Radius
Command:
circlecr
Description:
This tool lets you create circles with a given center and radius.
Procedure:
- Enter the radius in the option toolbar or use the command
radius
,
rad
or
r
to enter the radius on the command line.
- Set the center of the circle using the mouse or enter a coordinate in
the command line.
19.3. Circle with 2 Points
CAD Toolbar:
Menu:
Draw - Circle - 2 Points
Command:
circle2p
Description:
Draws circles with two diametrically opposed points.
Procedure:
- Set the first point using the mouse or enter a coordinate in the
command line.
- Set the second point.
19.4. Circle with 3 Points
CAD Toolbar:
Menu:
Draw - Circle - 3 Points
Command:
circle3p
Description:
If you know any three points on the circle line of a circle, you can use
this tool to create circles.
Procedure:
- Set the first point using the mouse or enter a coordinate in the
command line.
- Set the second point.
- Set the third point.
19.5. Concentric Circle
CAD Toolbar:
Menu:
Draw - Circle - Concentric
Command:
offset, of
Options Toolbar:
Description:
With this tool you can create concentric circles.
Procedure:
- Enter the distance of the concentric circle from the original base
circle in the options toolbar shown at the top or in the command
line.
- Enter the number of concentric circles to create in the options
toolbar.
- Click the base circle. The concentric circle(s) are created on that
side on which the mouse cursor is located while selecting the base
circle.