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[[解析几何基础知识]] 1.[[线段相交问题]] 2.[[凸多边形面积]] 3.[[最小圆覆盖]] 4.[[扫描线]] 5.[[凸包问题]] 6.[[最近点对问题]] 7.[[圆的交与并]] 8.[[半平面交]] 9.[[Simpson积分]] 10.[[KD-Tree]]