public bool isRectangle(Coords coords)
        {
            if (coords.leftDown.Y == coords.rightDown.Y)
                if (coords.leftUp.Y == coords.rightUp.Y)
                    if (coords.leftDown.X == coords.leftDown.X)
                        if (coords.rightDown.X == coords.rightUp.X)
                            return true;
            return false;

        }