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劉德晧proof14
Author:
郭亮偉
GeoGebra
New Resources
画直线等分三角形的面积
兩位數除以一位數（一）
第八周作业
直角坐標平面上的旋轉變換
判斷球體
Discover Resources
用 Geogebra 模擬日照、影長變換
國旗
旋轉對稱
學測試題
阿波羅尼斯圓 的複本
Discover Topics
Addition
Vectors 3D (Three-Dimensional)
Derivative
Polynomial Functions
Arithmetic Operations