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入射角・反射角
Author:
matsubara
GeoGebra
New Resources
standingwave-plus
等積変形2
カージオイド
standingwave-reflection
standingwave-reflection-free
Discover Resources
区分
二次方程式動点問題
対称行列の固有ベクトル（ＣＡＳを使う方法）
正八面体から正十二面体へ
教科書p171 内接円と内心
Discover Topics
Unit Circle
Function Graph
Division
Median Line
Secant Line or Secant