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深圳2018
Author:
谢鹏
GeoGebra
New Resources
四邉形 (四年級) 教師版
近似值：有效數字
球體建築師
拼砌四邊形
判斷球體
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周界
三圓外切
圓錐的截面的副本
Erdos-Mordell 不等式的副本
正方体内切球
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Unit Circle
Straight Lines
Calculus
Statistics
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