rintSegments(splitQuadratic((0, 0), (50, 100), (100, 0), 25, False))
        ((0, 0), (12.5, 25), (25, 37.5))
        ((25, 37.5), (62.5, 75), (100, 0))
        >>> printSegments(splitQuadratic((0, 0), (50, 100), (100, 0), 25, True))
        ((0, 0), (7.32233, 14.6447), (14.6447, 25))
        ((14.6447, 25), (50, 75), (85.3553, 25))
        ((85.3553, 25), (92.6777, 14.6447), (100, -7.10543e-15))
        >>> # XXX I'm not at all sure if the following behavior is desirable:
        >>> printSegments(splitQuadratic((0, 0), (50, 100), (100, 0), 50, True))
        ((0, 0), (25, 50), (50, 50))
        ((50, 50), (50, 50), (50, 50))
        ((50, 50), (75, 50), (100, 0))
    c