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第4問外接円
Author:
河本順康
GeoGebra
New Resources
接点の作る円は内接円
目で見る立方体の2等分
等積変形2
二次曲線と離心率
サイクロイド
Discover Resources
ボロノイ図
線分の衝突
y'=2x-yと部分積分
算法天生法指南二之巻(37)解答
感覚と数（見た目がいい比は？）
Discover Topics
Division
Frequency Distribution
Straight Lines
Arithmetic
Addition