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2017-09-02－五複合四面體
Author:
黃俊翔
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等的四邊形
錐體建築師
三位數除以一位數（二）
異分母分數減法
Discover Resources
專題
Wave Interference
dynamics dragon
球體
七年级数学平行线间的橡皮筋问题
Discover Topics
Frequency Distribution
Exponent
Expected Value
Kite
Trigonometry