Arcs can be placed on any of the conics - circle, ellipse, parabola, hyperbola - or any function. Points are automatically placed at the ends of the arc.
Here are the steps:
- First draw the conic or function which will be the basis for the arc.
- Choose the Arc tool
and move the cursor over the section of the existing curve where the arc will be defined. Click and drag the cursor over the curve.
Endpoints are automatically inserted on the arc.