双曲几何过直线外一点,可做两条平行线至无数条。两条平行线的情况能用画图来具体解释一下吗? 知乎 Template




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tomski双曲几何过直线外一点,可做两条平行线至无数条。两条平行线的情况能用画图来具体解释一下吗? 知乎 coloring