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反射定律 Law of Reflection
Author:
W.L. Wong, Albert
GeoGebra
New Resources
美國國旗 (Codex 版)
球體建築師
Earth with coastline
AI 訓練教室
拼砌四邊形
Discover Resources
範例：丟骰子
照片方塊
v中點座標軌跡(圓大正多邊形小)
旋轉扇形
周长相等，正方形，长方形和正三角形，圆面积大小比较
Discover Topics
Limits
Function Graph
Geometric Mean
Pyramid
Functions