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Ellips 的副本
Author:
徐晓雷
GeoGebra
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【案例】2018年全国1卷理科12题
四邊形的特性
判斷球體
GeoGebra笔记功能体验课件
球体的体积推导（优化版）
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拋物線之極偶 / polarity for parabola
多边形外角和
三角網狀圖
Cross Product for 2D Vectors (平面外積)
平方求和V 庄皮春 (Pi-Chun Chuang)
Discover Topics
Differential Equation
Standard Deviation
Diagrams
Coordinates
Rectangle