An ellipse is a shape that can represent not only an ellipse or a circle but also an arc (unclosed) or a segment (closed, an arc plus two radii going from the ends of the arc and meeting in the center):
Figure 11-19. Handles on an ellipse, arc, and segment
To switch to the Ellipse tool, press or . Here are the ellipse drawing shortcuts:
Dragging on the canvas creates an ellipse inscribed into the (imaginary) rectangle that ...