def clockwise_signed_polygon_area(signed_area: float) ->bool:
    """True iff given signed area is 0 or a signed area of a
    clockwise ordered polygon.

    signed_area -- the signed area of any polygon

    Consider that Y axis IS NOT inverted. Else, returned value is false.

    See http://stackoverflow.com/a/1165943/3077939

    """
    return signed_area >= 0.0
