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幾何_圓2
Author:
cjwon
GeoGebra
New Resources
異分母分數減法
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
兩位數加法
球体的体积推导（优化版）
Discover Resources
錐體建築師
正方體交角
第四冊4-1習題8(1)
分段函數
平移指令
Discover Topics
Trigonometric Functions
Scatter Plot
Arithmetic
Sequences and Series
Scalene Triangles