Introduction
Find below the easiest way I have found so far to make a circle path in G-Code.
The coordinates below are absolute, we are considering we start from origin (0, 0)
Move from the center to Y10

Make circle (counter clockwise arc)

Go back to the center

G01 X0 Y10 F200 // Move from the center to Y10 (radius 10), feed rate 200 G03 X0 Y10 I-0 J-10 // Make circle (counter clockwise arc, G02 for clockwise arc) G01 X0 Y0 F200 // Go back to the center (0, 0), feed rate 200