欲穷千里日,登楼数千层唐朝诗人王之涣留给后人的佳作《登鹳雀楼》不仅刻画了祖国的壮丽山河,而且写出了登高望远的襟怀.其中一句:“欲穷千里目,更上一层楼”更揭示了“只有站得高,才能看得远”这一生活哲理,成为不朽名句.如果从数学角度推理,以自己为中心要看到千里内(方圆一 For thousands of years of poverty, thousands of floors of the Tang Dynasty poet Wang Zhifu left for the posterity of the “Tengkai quelou” not only portrays the magnificent mountains and rivers of the motherland, but also writes a long-term vision of ambition. One of them: “Going to a higher level” further reveals the philosophy of “only standing tall and can only see it far” as an immortal name. If we reason from a mathematical point of view, we must see ourselves within a thousand miles (circle 1).