4. Arc

If you want to add an arc, click on the button "Arc". You will then see the following window.

When adding arcs, there are also a few new options that haven´t been explained yet.

Firstly, you have to define the diameter. You can either define it by entering a specific value or you use the pick tool (“Pick Diameter”) to choose a propriate diameter that has already been used in the graphic interface.

When placing the arc, there are three different methods for setting it:

• Start-Center-End: Start and Center of the arc will be placed by a simple right-click. The end of the arc can then be defined on the basis of these two points by moving the mouse.
• Start-End-Edge: Start and End of the are placed by right-clicking. The edge of the arc can then be defined on the basis of these two points by moving the mouse.
• Start-End-Center: Start and End of the are placed by right-clicking. The center of the arc can then be defined on the basis of these two points by moving the mouse.

You can also decide for the direction when placing the arc. You can either choose to place it clockwise or counter clockwise.