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餘弦定理
Author:
yuchengda
GeoGebra
New Resources
兩位數除以一位數（一）
錐體建築師
異分母分數減法
球体的体积推导（优化版）
拼砌四邊形
Discover Resources
testing
NCM(2nd)
gslsj 三角數列
周界平移
正方体展开图的副本
Discover Topics
Logarithmic Functions
Square
Geometric Mean
Exponent
Multiplication