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2020東大理系５
Author:
Saito Koichi
GeoGebra
New Resources
standingwave-reflection-free
接点の作る円は内接円
正１７角形 作図 regular 17-gon 2
アステロイド
sine-wave
Discover Resources
Ex_100
Math Investigation-2
直線のベクトル方程式（点Pの存在範囲2）
y=ax+bのグラフ選び
双曲線の平行移動
Discover Topics
Root
Rotation
Fractal Geometry
Sine
Trigonometry