26.10.3  Circles (TI compatibility)

The Circle command creates a circle.

• Circle takes three mandatory arguments and one optional argument:
  • x,y,r, three real numbers.
  • Optionally, n, either 0 or 1 (by default, 1).
• Circle(x,y,r,n) returns the circle centered at (x,y) with radius r. If n=1, it also draws the circle; if n=0, it erases it.

Example