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椭圆里面光的汇聚
Author:
李大地(Field Lee)
GeoGebra
New Resources
Nested spiral octagon
Fibonacci Clock
世界平面地圖 (Codex╱2026.10.07)
國旗 (作圖步驟直接餵給 Claude)
找出對稱軸
Discover Resources
線性組合2 三角形
Ambiguous Cone
gjh-h04-01 多個堆疊的直角三角形
正态函数曲线的特点
正弦定理的副本
Discover Topics
Linear Functions
Right Triangles
Plane Figures or Shapes
Normal Distribution
Hypergeometric Distribution