Method check_circle

graph.py:1476–1478

(self, points: list[Point])

    return self.why_equal(oa, ob, None) and self.why_equal(oa, oc, None)

  def check_circle(self, points: list[Point]) -> bool:
    o, a, b, c = points
    return self.check_cong([o, a, o, b]) and self.check_cong([o, a, o, c])

  def get_circles_thru_all(self, *points: list[Point]) -> list[Circle]:
    circle2count = defaultdict(lambda: 0)