def METHOD_NAME(self):
    p1 = (2, 0, 0)
    p2 = (0, 1, 0)
    p3 = (0, 0, 2)
    plane = PlaneEquation.from_three_points(p1, p2, p3)
    normal = plane.normal
    v1, v2 = plane.two_vectors()
    self.assertTrue(abs(normal.dot(v1)) < 1e-8)
    self.assertTrue(abs(normal.dot(v2)) < 1e-8)
    self.assertTrue(abs(v1.dot(v2)) < 1e-8)