3D sketch

Arc

A circle arc is created either by entering the coordinates in the dialog panel, or directly from the graphics zone by locating a point or selecting an element.

Creation Stages:

Click the icon or select the 3D sketch > Other curves > Arc... command from the drop-down menu.

Creation by Center and 2 passing points:

In the Size topic, select Free Size mode.
Check Given Center.
Enter the coordinates of the center point and the 2 passing points of the circle arc.

Creation by 3 passing points:

In the Size topic, select Free Size mode.
Uncheck the box Given center.
Enter the coordinates of the passing points of the circle arc

Creation by Center and Diameter or Radius:

In the Size topic, select Diameter or radius mode.
Enter the value from the diameter or radius of the circle arc.
Check Given Center.
Enter the coordinates of the center point of the circle arc.

Creation by Diameter or Radius and 2 passing points:

In the Size topic, select Diameter or radius mode.
Enter the value from the diameter or radius of the circle arc.
Uncheck the box Given center.
Enter the coordinates of the 2 passing points of the circle arc.

No matter which creation mode is chosen, the circle arc is created with its center point and its extremity points.

Available Options:

During an arc creation, it is created between the selected points. By checking Complementary it is the complementary arc (to close the circle) which will be created. For example, if the arc is with an angle of 60°, its complementary will be 300°.

Additional Information / Modifications:

Displacement of an extremity:

Click the end of a circle arc and move your mouse while holding down the left button to modify the opening angle of the circle arc.

Displacement of the circle arc:

Click the circle arc or its center point and move your mouse while holding down the left button to modify the position of the circle.

From the popup menu you can:

Constrain the center of the circle arc on an element with the Define center... command.

When the center point no longer exists, recreate it with the command Create center.
Create the complimentary arc with the command Complimentary.