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GeoGebra
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Angle between 2 planes
Author:
Big Lee
GeoGebra
New Resources
Fibonacci Clock
美國國旗 (Codex 版)
找出對稱軸
直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
Discover Resources
生活
反射定律 Law of Reflection
分段移動
柱體建築師 1的副本
连续开方（制作：谢建华，修订：孟宝兴）
Discover Topics
Median Value
Geometric Mean
Histogram
Standard Deviation
Tree Diagrams