points = [(p[0], -p[1]) for p in points] # as we look to back of the face
center, start, end = [geom.Pnt2d(*p) for p in points]
arc = sketch.addArc(center, start, end, True)
points = [(p[0], -p[1]) for p in points] # as we look to back of the face
center, start, end = [geom.Pnt2d(*p) for p in points]
arc = sketch.addArc(center, start, end, True)