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refraction law
Author:
goldengrape
调整参数： 入射角 n1折射率 n2折射率
GeoGebra
New Resources
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
兩位數加法
圓的切線方程
漂亮的摇摆曲线
Discover Resources
範例：自製工具「格線」
橢圓軌跡加滑桿
test
圓周角觀察操作
Copy of 正多边形内接迭代
Discover Topics
Centroid or Barycenter
Probability
Inequalities
Fractal Geometry
Symmetry