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元旦快乐（制作：孟宝兴）
Author:
孟宝兴
GeoGebra
New Resources
找出對稱軸
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
第八周作业
判斷球體
Discover Resources
面積認識
軌跡圖
正方形推垛
水车应用题动画演示
劉虹圻 旁心
Discover Topics
Parametric Curves
Area
Quadratic Equations
Mode
Vectors 2D (Two-Dimensional)