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張威
GeoGebra
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找出對稱軸
四邉形 (四年級) 教師版
錐體建築師
四邊形的特性
球體建築師
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旋轉
餘弦公式_1
Trigonometric Relations(90,270)
幾何板
三角函数的概念核心知识点
Discover Topics
Means
Hypergeometric Distribution
Vectors 2D (Two-Dimensional)
Step Functions
Diagrams