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通過領域2017
Author:
yoshihisa honda
GeoGebra
New Resources
カージオイド
standingwave-reflection-fixed
正１７角形 作図 regular 17-gon
standingwave-plus
二次曲線と離心率
Discover Resources
太陽
星型図形
相似確認（四角形）
外接内接四角形の性質
分数ゲーム：この分数はどこだ？
Discover Topics
Intersection
Standard Deviation
Perimeter
Arithmetic Operations
Differential Calculus