Arc objects are created using the following functions.  An Arc is drawn inside an invisible rectangle by specifying the top-left corner point (x1, y1), the bottom-right corner point (x2, y2), the start angle, and the end angle in degrees.

Function Description
Arc(x1, y1, x2, y2, startAngle, endAngle) Creates an Arc with top-left corner at x1, y1, bottom-right corner at x2, y2, startAngle (in degrees), endAngle (in degrees).
Drawing always occurs in the direction of the unit circle (i.e., counter-clockwise), for positive angles.  If one or both of the angles are negative, then drawing occurs in the opposite direction of the unit circle (i.e., clockwise).
Arc(x1, y1, x2, y2, startAngle, endAngle, color, fill, thickness) Same as above, plus color (e.g. Color.BLACK (default), Color.ORANGE or Color(255, 0, 255), using specific RGB values), fill (boolean – default is False), and thickness (default is 1 (pixel)).

Once an Arc has been created, it may be added to a Display.

arc1 = Arc(100, 100, 200, 200, 0, 180)

Finally, you may use the following functions:

Function Description
arc1.encloses(other) Returns True if arc1 encloses other graphics object.
arc1.intersects(other) Returns True if arc1 intersects other graphics object.
arc1.getX() Returns the x coordinate (in pixels).
arc1.getY() Returns the y coordinate (in pixels).
arc1.setX(x) Sets the x coordinate (in pixels).
arc1.setY(y) Sets the y coordinate (in pixels).
arc1.getPosition() Returns the position as an (x, y) tuple.  This is the top-left corner of the box that encloses the arc.
arc1.setPosition(x, y) Sets the position to x, y.  This is the top-left corner of the box that encloses the arc.