Arcs
Choose the Arc tool to draw arc segments. Tap and drag on the canvas to create a new arc.
As with the other line tools, tap and drag to begin drawing an arc segment, and then tap and hold with a second finger to easily create perfect arcs.
The arc tool creates circular arcs, however you can edit the start and end points of an arc’s path with the Path Selection tool.
As with lines, and other paths, you can customize the appearance of arcs using the Stroke pane or the Effects pane from the Appearance panel.
Next: Rectangles >