def Check(a,  b):
    dist = ((a[0] - b[0]) ** 2 + 550 / ((a[1] + b[1]) / 2) * (a[1] - b[1]) ** 2) ** 0.5
    calibration = (a[1] + b[1]) / 2       
    if 0 < dist < 0.25 * calibration:
        return True
    else:
        return False