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正十二面體內接正四面體或內接正六面體
Author:
侯杰材
GeoGebra
New Resources
算柱 (兩位數)
球體建築師
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
Discover Resources
內切圓滾動
trapezium
GGBstar
線性規劃
圆锥的侧面展开图3D动画的副本
Discover Topics
Random Variables
Arithmetic
Optimization Problems
Cosine
Statistical Characteristics