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正四面體
Author:
明欣
正四面體
GeoGebra
New Resources
異分母分數減法
四邊形的特性
球体的体积推导（优化版）
【案例】2018年全国1卷理科12题
第八周作业
Discover Resources
waaachen0001
Example 5
體積
鉛筆畫圓
勾股定理证明2
Discover Topics
Hyperbola
Cuboid
Polygons
Hypothesis Testing
Dilation