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2017-11-02 Q.3
Author:
johnmayhk
GeoGebra
New Resources
四邉形 (四年級) 教師版
【案例】2018年全国1卷理科12题
找出對稱軸
四邊形的特性
球体的体积推导（优化版）
Discover Resources
翻轉方塊(單開)
day01_01
內心
三次函数定积分的动态演示.许兴华数学
任意截面切割正方体
Discover Topics
Curve Sketching
Random Experiments
Volume
Vectors
Orthocenter