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[問題] 線在面上
Author:
羅驥韡 (Pegasus Roe)
當 R 點在 PEQ 平面上時,BR : RD = ?
GeoGebra
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【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
探究三角形的全等條件
圓的切線方程
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圆锥曲线定义的拓展(卡西尼卵形线)
矩形
三次函數01
Drag C and see
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Ratios
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