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正弦定理
Author:
yuchengda
GeoGebra
New Resources
GeoGebra笔记功能体验课件
柱體建築師
球体的体积推导（优化版）
球體建築師
判斷球體
Discover Resources
Polygon Activity
數學傳播39卷4期, 平面幾何公式思考
GGB2
Copy of 圖一
盈利與虧蝕
Discover Topics
Perimeter
Indefinite Integral
Variance
Parallelogram
Tangent Function