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蛋黄肉粽
Author:
nps
GeoGebra
New Resources
球体的体积推导（优化版）
畫出對稱圖形
四邉形 (四年級) 教師版
找出對稱軸
第八周作业
Discover Resources
橢圓的軌跡
Enneper's surface
congruent (SSS) 2
賺賠：例1的副本
旋轉橢圓
Discover Topics
Straight Lines
Parallelogram
Congruence
Trigonometry
Planes